diff --git a/release.md b/release.md
index 6eceff87..274d92fc 100644
--- a/release.md
+++ b/release.md
@@ -2,14 +2,14 @@
 
 Full docs @ https://docs.grid.space/projects/kiri-moto
 
-# Release 3.4 (tbd)
+# Release 3.4 (in progress)
 
 ## `C` complete, `P` partial, `-` todo
 
 ## Kiri:moto
 
 * `-` refactor cnc to use new core slicer engine
-* `-` improved vertex replacement and widget update matrix tracking
+* `-` improve vertex replacement and widget update matrix tracking
 
 ## Mesh:Tool
 
diff --git a/src/kiri-mode/fdm/export.js b/src/kiri-mode/fdm/export.js
index 92eab23c..ae45f554 100644
--- a/src/kiri-mode/fdm/export.js
+++ b/src/kiri-mode/fdm/export.js
@@ -132,8 +132,8 @@ FDM.export = function(print, online, ondone, ondebug) {
     subst.tool_count = tools_used.length;
 
     // smallish band-aid. refactor above to remove redundancy
-    function updateParams(layer) {
-        let params = getRangeParameters(process, layer);
+    function updateParams(layer, params) {
+        // let params = getRangeParameters(process, layer);
         zhop = params.zHopDistance || 0; // range
         retDist = params.outputRetractDist || 0; // range
         retSpeed = params.outputRetractSpeed * 60 || 1; // range
@@ -499,10 +499,9 @@ FDM.export = function(print, online, ondone, ondebug) {
     while (layer < layers.length) {
         path = layers[layer];
         layerno = path.slice.index;
-
         // range overrides
         if (path.layer >= 0) {
-            updateParams(path.layer);
+            updateParams(path.layer, path.params);
         }
 
         emitPerMM = print.extrudePerMM(
diff --git a/src/kiri-mode/fdm/prepare.js b/src/kiri-mode/fdm/prepare.js
index b6d02f1b..3310c60d 100644
--- a/src/kiri-mode/fdm/prepare.js
+++ b/src/kiri-mode/fdm/prepare.js
@@ -539,6 +539,7 @@ FDM.prepare = function(widgets, settings, update) {
             layerout.z = z + slice.height / 2;
             layerout.height = layerout.height || slice.height;
             layerout.slice = slice;
+            layerout.params = params;
             // mark layer as anchor if slice is belt and flag set
             layerout.anchor = slice.belt && slice.belt.anchor;
             // detect extruder change and print purge block