diff --git a/release.md b/release.md
index 6ead48a6..de70d037 100644
--- a/release.md
+++ b/release.md
@@ -6,6 +6,10 @@ Full docs @ https://docs.grid.space/projects/kiri-moto
 # Release 3.9
 
 * CAM clearly delineate ops reachable or not on timeline
+- remove clear top (always on)
+- add z top (like z bottom)
+- stock always on
+- add "common" overrides in ops (z top/bottom/thru, direction)
 
 
 # Release 3.8 (2023-01-21)
diff --git a/src/kiri/init.js b/src/kiri/init.js
index 497ad094..731734c0 100644
--- a/src/kiri/init.js
+++ b/src/kiri/init.js
@@ -1802,7 +1802,7 @@ gapp.register("kiri.init", [], (root, exports) => {
             detail:           uc.newSelect(LANG.pt_qual_s, {title: LANG.pt_qual_l, action: detailSave}, "detail"),
             healMesh:         uc.newBoolean(LANG.pt_heal_s, booleanSave, {title: LANG.pt_heal_l}),
             threaded:         uc.newBoolean(LANG.pt_thrd_s, booleanSave, {title: LANG.pt_thrd_l, modes:FDM_CAM_SLA}),
-            assembly:         uc.newBoolean(LANG.pt_assy_s, booleanSave, {title: LANG.pt_assy_l, modes:FDM_SLA}),
+            assembly:         uc.newBoolean(LANG.pt_assy_s, booleanSave, {title: LANG.pt_assy_l, modes:FDM_CAM_SLA}),
 
             prefadd:          uc.checkpoint($('prefs-add')),