diff --git a/src/kiri-mode/cam/client.js b/src/kiri-mode/cam/client.js
index d4a554ae..55a58eca 100644
--- a/src/kiri-mode/cam/client.js
+++ b/src/kiri-mode/cam/client.js
@@ -1262,10 +1262,10 @@ function createPopOp(type, map) {
 function createTabBox(iw, ic, n) {
     const { track } = iw;
     const { stock, bounds, process } = API.conf.get();
-    const { camTabsWidth, camTabsHeight, camTabsDepth, camTabsMidline } = process;
+    const { camTabsWidth, camTabsHeight, camTabsDepth, camTabsMidline, camZBottom } = process;
     const sz = stock.z || bounds.max.z;
     const zto = sz - iw.track.top;
-    const zp = sz - track.box.d + process.camZBottom - zto + (camTabsMidline ? 0 : camTabsHeight / 2);
+    const zp = (camZBottom ? camZBottom : sz - track.box.d - zto) + (camTabsMidline ? 0 : camTabsHeight / 2);
     ic.x += n.x * camTabsDepth / 2; // offset from part
     ic.z -= n.y * camTabsDepth / 2; // offset swap z,y
     ic.y = zp; // offset swap in world space y,z
diff --git a/web/kiri/index.css b/web/kiri/index.css
index 7c5c3fa0..93e84fcc 100644
--- a/web/kiri/index.css
+++ b/web/kiri/index.css
@@ -865,6 +865,12 @@ th, tr, td, label {
     background-color: rgba(255,255,255,0.75);
     white-space: nowrap;
 }
+#oplist > div:hover, #op-add:hover {
+    background-color: rgba(255,255,255,0.9);
+}
+#oplist > div.editing {
+    background-color: rgba(190,230,190,0.85);
+}
 #oplist .drag {
     background-color: var(--highlight) !important;
 }
@@ -881,11 +887,8 @@ th, tr, td, label {
     font-size: 12px;
     color: rgba(0,0,0,0);
 }
-#oplist > div.editing {
-    background-color: rgba(220,230,220,0.8);
-}
 .dark #oplist div:hover .del {
-    color: #fff;
+    color: #777;
 }
 #oplist div:hover .del {
     color: #888;