diff --git a/pkg/noun/allocate.h b/pkg/noun/allocate.h
index 8127cd0c94..6546b261f3 100644
--- a/pkg/noun/allocate.h
+++ b/pkg/noun/allocate.h
@@ -384,7 +384,7 @@
   **/
   /* u3a_into(): convert loom offset [x] into generic pointer.
    */
-#   define u3a_into(x)  (u3_Loom + (x))
+#   define u3a_into(x)  ((void *)(u3_Loom + (x)))
 
   /* u3a_outa(): convert pointer [p] into word offset into loom.
    */
diff --git a/pkg/noun/jets.c b/pkg/noun/jets.c
index dcabcdb559..56f30ce92f 100644
--- a/pkg/noun/jets.c
+++ b/pkg/noun/jets.c
@@ -26,7 +26,7 @@
 typedef struct {
   u3_weak  hax;                     //  axis of hooked inner core
   u3j_site sit_u;                   //  call-site data
-} _cj_hank;
+} _cj_v2_hank;
 
 /**  Functions.
 **/
@@ -1069,7 +1069,7 @@ _cj_prog(u3_weak loc, u3_noun fol)
 /* cj_hank_find(): find cached hook information, keyed by arbitrary
  *                 prefix and term cords. RETAIN.
  */
-static _cj_hank*
+static _cj_v2_hank*
 _cj_hank_find(u3_noun pre, u3_noun tam)
 {
   u3_noun key = u3nc(u3k(pre), u3k(tam));
@@ -1077,10 +1077,10 @@ _cj_hank_find(u3_noun pre, u3_noun tam)
 
   if ( u3_none != got ) {
     u3z(key);
-    return u3to(_cj_hank, got);
+    return u3to(_cj_v2_hank, got);
   }
   else {
-    _cj_hank* new_u = u3a_walloc(c3_wiseof(_cj_hank));
+    _cj_v2_hank* new_u = u3a_walloc(c3_wiseof(_cj_v2_hank));
     u3a_road* rod_u = u3R;
 
     while ( rod_u->par_p && u3_none == got ) {
@@ -1092,7 +1092,7 @@ _cj_hank_find(u3_noun pre, u3_noun tam)
       new_u->hax = u3_none;
     }
     else {
-      _cj_hank* old_u = u3to(_cj_hank, got);
+      _cj_v2_hank* old_u = u3to(_cj_v2_hank, got);
       if ( u3_none != (new_u->hax = old_u->hax) ) {
         //  it's unusual but safe to "take" here, because
         //  u3a_take will no-op on senior nouns (just as u3k would)
@@ -1101,7 +1101,7 @@ _cj_hank_find(u3_noun pre, u3_noun tam)
       }
     }
 
-    u3h_put(u3R->jed.han_p, key, u3of(_cj_hank, new_u));
+    u3h_put(u3R->jed.han_p, key, u3of(_cj_v2_hank, new_u));
     u3z(key);
     return new_u;
   }
@@ -1112,7 +1112,7 @@ _cj_hank_find(u3_noun pre, u3_noun tam)
  *                  core on return if valid. RETAIN.
  */
 static c3_o
-_cj_hank_fine(_cj_hank* han_u, u3_noun cor, u3_noun *inn)
+_cj_hank_fine(_cj_v2_hank* han_u, u3_noun cor, u3_noun *inn)
 {
   u3_noun hax = han_u->hax;
   if ( u3_none == hax ) {
@@ -1134,7 +1134,7 @@ _cj_hank_fine(_cj_hank* han_u, u3_noun cor, u3_noun *inn)
 /* _cj_hank_lose(): release memory maintained in a hook cache.
 */
 static void
-_cj_hank_lose(_cj_hank* han_u)
+_cj_hank_lose(_cj_v2_hank* han_u)
 {
   if ( u3_none != han_u->hax ) {
     u3z(han_u->hax);
@@ -1145,7 +1145,7 @@ _cj_hank_lose(_cj_hank* han_u)
 /* _cj_hank_fill(): slow path, populate han_u.
  */
 static u3_noun
-_cj_hank_fill(_cj_hank* han_u, u3_noun tam, u3_noun cor)
+_cj_hank_fill(_cj_v2_hank* han_u, u3_noun tam, u3_noun cor)
 {
   u3_weak   loc, col;
   u3_noun   got, pat, nam, huc;
@@ -1642,7 +1642,7 @@ u3j_cook(const c3_c* key_c,
          const c3_c* tam_c)
 {
   u3_noun pro, key, tam, inn;
-  _cj_hank* han_u;
+  _cj_v2_hank* han_u;
 
   u3t_on(glu_o);
   key = u3i_string(key_c);
@@ -1995,8 +1995,8 @@ u3j_rite_mine(u3j_rite* rit_u, u3_noun clu, u3_noun cor)
 static u3p(_cj_hank)
 _cj_take_hank_cb(u3p(_cj_hank) nah_p)
 {
-  _cj_hank* nah_u = u3to(_cj_hank, nah_p);
-  _cj_hank* han_u = u3a_walloc(c3_wiseof(_cj_hank));
+  _cj_v2_hank* nah_u = u3to(_cj_v2_hank, nah_p);
+  _cj_v2_hank* han_u = u3a_walloc(c3_wiseof(_cj_v2_hank));
 
   if ( u3_none == nah_u->hax ) {
     han_u->hax = u3_none;
@@ -2007,7 +2007,7 @@ _cj_take_hank_cb(u3p(_cj_hank) nah_p)
     u3j_site_take(&(han_u->sit_u), &(nah_u->sit_u));
   }
 
-  return u3of(_cj_hank, han_u);
+  return u3of(_cj_v2_hank, han_u);
 }
 
 /* u3j_take(): copy junior jet state.
@@ -2029,25 +2029,25 @@ static void
 _cj_merge_hank_cb(u3_noun kev, void* wit)
 {
   u3p(u3h_root) han_p = *(u3p(u3h_root)*)wit;
-  _cj_hank* nah_u;
+  _cj_v2_hank* nah_u;
   u3_noun key;
   u3p(_cj_hank) nah_p;
   u3x_cell(kev, &key, &nah_p);
 
-  nah_u = u3to(_cj_hank, nah_p);
+  nah_u = u3to(_cj_v2_hank, nah_p);
 
   if ( u3_none == nah_u->hax ) {
     u3a_wfree(nah_u);
   }
   else {
-    _cj_hank* han_u;
+    _cj_v2_hank* han_u;
     u3_weak     got = u3h_git(u3R->jed.han_p, key);
 
     if ( u3_none == got )  {
       han_u = nah_u;
     }
     else {
-      han_u = u3to(_cj_hank, got);
+      han_u = u3to(_cj_v2_hank, got);
 
       if ( u3_none != han_u->hax ) {
         u3z(han_u->hax);
@@ -2058,7 +2058,7 @@ _cj_merge_hank_cb(u3_noun kev, void* wit)
       u3a_wfree(nah_u);
     }
 
-    u3h_put(han_p, key, u3of(_cj_hank, han_u));
+    u3h_put(han_p, key, u3of(_cj_v2_hank, han_u));
   }
 }
 
@@ -2170,7 +2170,7 @@ _cj_warm_tap(u3_noun kev, void* wit)
 static void
 _cj_ream_hank(u3_noun kev)
 {
-  u3j_site_ream(&(u3to(_cj_hank, u3t(kev))->sit_u));
+  u3j_site_ream(&(u3to(_cj_v2_hank, u3t(kev))->sit_u));
 }
 
 /* u3j_ream(): rebuild warm state
@@ -2304,7 +2304,7 @@ static void
 _cj_mark_hank(u3_noun kev, void* dat)
 {
   c3_w* tot_w = (c3_w*) dat;
-  _cj_hank* han_u = u3to(_cj_hank, u3t(kev));
+  _cj_v2_hank* han_u = u3to(_cj_v2_hank, u3t(kev));
   *tot_w += u3a_mark_ptr(han_u);
   if ( u3_none != han_u->hax ) {
     *tot_w += u3a_mark_noun(han_u->hax);
@@ -2342,7 +2342,7 @@ u3j_mark(FILE* fil_u)
 static void
 _cj_free_hank(u3_noun kev)
 {
-  _cj_hank* han_u = u3to(_cj_hank, u3t(kev));
+  _cj_v2_hank* han_u = u3to(_cj_v2_hank, u3t(kev));
   if ( u3_none != han_u->hax ) {
     u3z(han_u->hax);
     u3j_site_lose(&(han_u->sit_u));
diff --git a/pkg/noun/v1/jets.h b/pkg/noun/v1/jets.h
index ed429813ab..15e160655b 100644
--- a/pkg/noun/v1/jets.h
+++ b/pkg/noun/v1/jets.h
@@ -1,17 +1,5 @@
 /// @file
 
-// u3a_v1_cell
-// u3a_v1_wfree
-// u3h_v1_new
-// u3j_fink
-// u3j_fist
-// u3j_ream
-// u3j_rite
-// u3j_site
-// u3j_site_lose
-// u3H
-// u3R
-
 #ifndef U3_JETS_V1_H
 #define U3_JETS_V1_H
 
diff --git a/pkg/noun/v1/nock.c b/pkg/noun/v1/nock.c
index dcab0e532e..41b76c8a27 100644
--- a/pkg/noun/v1/nock.c
+++ b/pkg/noun/v1/nock.c
@@ -44,7 +44,6 @@ _cn_prog_free(u3n_v1_prog* pog_u)
   u3a_v1_free(pog_u);
 }
 
-
 /* _n_feb(): u3h_v1_walk helper for u3n_v1_free
  */
 static void
diff --git a/pkg/noun/v2/allocate.c b/pkg/noun/v2/allocate.c
index 0ebc392569..74e54a975b 100644
--- a/pkg/noun/v2/allocate.c
+++ b/pkg/noun/v2/allocate.c
@@ -69,9 +69,3 @@ u3a_v2_rewrite_noun(u3_noun som)
   cel->hed = u3a_v2_rewritten_noun(cel->hed);
   cel->tel = u3a_v2_rewritten_noun(cel->tel);
 }
-
-// 4 categories of symbols:
-// - v1
-// - v2
-// - current
-// - migration (both)
\ No newline at end of file
diff --git a/pkg/noun/v2/hashtable.c b/pkg/noun/v2/hashtable.c
index 6cab9bc24d..6963d07fde 100644
--- a/pkg/noun/v2/hashtable.c
+++ b/pkg/noun/v2/hashtable.c
@@ -61,116 +61,6 @@ _ch_v2_free_node(u3h_v2_node* han_u, c3_w lef_w)
   u3a_v2_wfree(han_u);
 }
 
-/* u3h_v2_free(): free hashtable.
-*/
-void
-u3h_v2_free(u3p(u3h_v2_root) har_p)
-{
-  u3h_v2_root* har_u = u3to(u3h_v2_root, har_p);
-  c3_w        i_w;
-
-  for ( i_w = 0; i_w < 64; i_w++ ) {
-    c3_w sot_w = har_u->sot_w[i_w];
-
-    if ( _(u3h_v2_slot_is_noun(sot_w)) ) {
-      u3z(u3h_v2_slot_to_noun(sot_w));
-    }
-    else if ( _(u3h_v2_slot_is_node(sot_w)) ) {
-      u3h_v2_node* han_u = u3h_v2_slot_to_node(sot_w);
-
-      _ch_v2_free_node(han_u, 25);
-    }
-  }
-  u3a_v2_wfree(har_u);
-}
-
-/* _ch_v2_walk_buck(): walk bucket for gc.
-**              NB: copy of _ch_v2_walk_buck in pkg/noun/hashtable.c
-*/
-static void
-_ch_v2_walk_buck(u3h_v2_buck* hab_u, void (*fun_f)(u3_noun, void*), void* wit)
-{
-  c3_w i_w;
-
-  for ( i_w = 0; i_w < hab_u->len_w; i_w++ ) {
-    fun_f(u3h_v2_slot_to_noun(hab_u->sot_w[i_w]), wit);
-  }
-}
-
-/* _ch_v2_walk_node(): walk node for gc.
-*/
-static void
-_ch_v2_walk_node(u3h_v2_node* han_u, c3_w lef_w, void (*fun_f)(u3_noun, void*), void* wit)
-{
-  c3_w len_w = _ch_v2_popcount(han_u->map_w);
-  c3_w i_w;
-
-  lef_w -= 5;
-
-  for ( i_w = 0; i_w < len_w; i_w++ ) {
-    c3_w sot_w = han_u->sot_w[i_w];
-
-    if ( _(u3h_v2_slot_is_noun(sot_w)) ) {
-      u3_noun kev = u3h_v2_slot_to_noun(sot_w);
-
-      fun_f(kev, wit);
-    }
-    else {
-      void* hav_v = u3h_v2_slot_to_node(sot_w);
-
-      if ( 0 == lef_w ) {
-        _ch_v2_walk_buck(hav_v, fun_f, wit);
-      } else {
-        _ch_v2_walk_node(hav_v, lef_w, fun_f, wit);
-      }
-    }
-  }
-}
-
-/* u3h_v2_walk_with(): traverse hashtable with key, value fn and data
- *                  argument; RETAINS.
-*/
-void
-u3h_v2_walk_with(u3p(u3h_v2_root) har_p,
-              void (*fun_f)(u3_noun, void*),
-              void* wit)
-{
-  u3h_v2_root* har_u = u3to(u3h_v2_root, har_p);
-  c3_w        i_w;
-
-  for ( i_w = 0; i_w < 64; i_w++ ) {
-    c3_w sot_w = har_u->sot_w[i_w];
-
-    if ( _(u3h_v2_slot_is_noun(sot_w)) ) {
-      u3_noun kev = u3h_v2_slot_to_noun(sot_w);
-
-      fun_f(kev, wit);
-    }
-    else if ( _(u3h_v2_slot_is_node(sot_w)) ) {
-      u3h_v2_node* han_u = u3h_v2_slot_to_node(sot_w);
-
-      _ch_v2_walk_node(han_u, 25, fun_f, wit);
-    }
-  }
-}
-
-/* _ch_v2_walk_plain(): use plain u3_noun fun_f for each node
- */
-static void
-_ch_v2_walk_plain(u3_noun kev, void* wit)
-{
-  void (*fun_f)(u3_noun) = wit;
-  fun_f(kev);
-}
-
-/* u3h_v2_walk(): u3h_v2_walk_with, but with no data argument
-*/
-void
-u3h_v2_walk(u3p(u3h_v2_root) har_p, void (*fun_f)(u3_noun))
-{
-  u3h_v2_walk_with(har_p, _ch_v2_walk_plain, fun_f);
-}
-
 /* _ch_v2_rewrite_buck(): rewrite buck for compaction.
 */
 void
@@ -242,7 +132,7 @@ u3h_v2_rewrite(u3p(u3h_v2_root) har_p)
       u3a_v2_rewrite_noun(kev);
     }
     else if ( _(u3h_v2_slot_is_node(sot_w)) ) {
-      u3h_v2_node* han_u = u3h_v1_slot_to_node(sot_w);
+      u3h_v2_node* han_u = (u3h_v2_node*) u3h_v1_slot_to_node(sot_w);
       u3h_v2_node* nod_u = u3to(u3h_v2_node, u3a_v2_rewritten(u3of(u3h_v2_node,han_u)));
 
       har_u->sot_w[i_w] = u3h_v2_node_to_slot(nod_u);
diff --git a/pkg/noun/v2/hashtable.h b/pkg/noun/v2/hashtable.h
index d6da41cf16..237bdac2af 100644
--- a/pkg/noun/v2/hashtable.h
+++ b/pkg/noun/v2/hashtable.h
@@ -2,12 +2,15 @@
 #define U3_HASHTABLE_V2_H
 
 #define u3h_v2_buck          u3h_buck
+#define u3h_v2_free          u3h_free
 #define u3h_v2_node          u3h_node
 #define u3h_v2_noun_to_slot  u3h_noun_to_slot
 #define u3h_v2_root          u3h_root
 #define u3h_v2_slot_is_node  u3h_slot_is_node
 #define u3h_v2_slot_is_noun  u3h_slot_is_noun
 #define u3h_v2_slot_to_noun  u3h_slot_to_noun
+#define u3h_v2_walk          u3h_walk
+#define u3h_v2_walk_with     u3h_walk_with
 
 #include "pkg/noun/hashtable.h"
 
@@ -29,29 +32,10 @@
 
     /**  Functions.
     ***
-    ***  Needs: delete and merge functions; clock reclamation function.
     **/
-      /* u3h_v2_free(): free hashtable.
-      */
-        void
-        u3h_v2_free(u3p(u3h_root) har_p);
-
       /* u3h_v2_rewrite(): rewrite hashtable for compaction.
       */
         void
         u3h_v2_rewrite(u3p(u3h_root) har_p);
 
-      /* u3h_v2_walk_with(): traverse hashtable with key, value fn and data
-       *                  argument; RETAINS.
-      */
-        void
-        u3h_v2_walk_with(u3p(u3h_root) har_p,
-                      void (*fun_f)(u3_noun, void*),
-                      void* wit);
-
-      /* u3h_v2_walk(): u3h_v2_walk_with, but with no data argument
-      */
-        void
-        u3h_v2_walk(u3p(u3h_root) har_p, void (*fun_f)(u3_noun));
-
 #endif /* U3_HASHTABLE_V2_H */
\ No newline at end of file
diff --git a/pkg/noun/v2/jets.c b/pkg/noun/v2/jets.c
index 237c22d03e..91b23e5955 100644
--- a/pkg/noun/v2/jets.c
+++ b/pkg/noun/v2/jets.c
@@ -12,31 +12,9 @@
 /**  Data structures.
 **/
 
-/* _cj_hank: cached hook information.
-**       NB: copy of _cj_hank from pkg/noun/jets.c
- */
-typedef struct {
-  u3_weak  hax;                     //  axis of hooked inner core
-  u3j_v2_site sit_u;                   //  call-site data
-} _cj_hank;
-
 /**  Functions.
 **/
 
-/* _cj_v2_free_hank(): free an entry from the hank cache.
-**              NB: copy of _cj_v2_free_hank() from pkg/noun/jets.c
-*/
-static void
-_cj_v2_free_hank(u3_noun kev)
-{
-  _cj_hank* han_u = u3to(_cj_hank, u3t(kev));
-  if ( u3_none != han_u->hax ) {
-    u3z(han_u->hax);
-    u3j_v2_site_lose(&(han_u->sit_u));
-  }
-  u3a_v2_wfree(han_u);
-}
-
 /* u3j_v2_rewrite_compact(): rewrite jet state for compaction.
  *
  * NB: u3R_v2->jed.han_p *must* be cleared (currently via u3j_v2_reclaim above)
diff --git a/pkg/noun/v2/manage.c b/pkg/noun/v2/manage.c
index 2790048b2b..525f356944 100644
--- a/pkg/noun/v2/manage.c
+++ b/pkg/noun/v2/manage.c
@@ -20,9 +20,6 @@ _cm_pack_rewrite(void)
   //
   u3_assert( &(u3H_v2->rod_u) == u3R_v2 );
 
-  //  NB: these implementations must be kept in sync with u3m_v2_reclaim();
-  //  anything not reclaimed must be rewritable
-  //
   u3v_v2_rewrite_compact();
   u3j_v2_rewrite_compact();
   u3n_v2_rewrite_compact();
diff --git a/pkg/noun/v2/manage.h b/pkg/noun/v2/manage.h
index 47f2fe2554..ec6ef581a2 100644
--- a/pkg/noun/v2/manage.h
+++ b/pkg/noun/v2/manage.h
@@ -5,11 +5,6 @@
 
     /** System management.
     **/
-      /* u3m_v2_reclaim: clear persistent caches to reclaim memory
-      */
-        void
-        u3m_v2_reclaim(void);
-
       /* u3m_v2_migrate: perform pointer compression loom migration if necessary.
          ver_w - target version
       */
diff --git a/pkg/noun/v2/nock.h b/pkg/noun/v2/nock.h
index 57f358eeca..320e9a5f62 100644
--- a/pkg/noun/v2/nock.h
+++ b/pkg/noun/v2/nock.h
@@ -10,11 +10,6 @@
 
   /**  Functions.
   **/
-    /* u3n_v2_free(): free bytecode cache.
-     */
-      void
-      u3n_v2_free(void);
-
     /* u3n_v2_rewrite_compact(): rewrite bytecode cache for compaction.
      */
       void