diff --git a/src/kiri/conf.js b/src/kiri/conf.js
index e6b33feb..12b5a783 100644
--- a/src/kiri/conf.js
+++ b/src/kiri/conf.js
@@ -287,14 +287,14 @@
                     sliceFillOverlap: 0.3,
                     sliceFillSparse: 0.5,
                     sliceFillType: "hex",
-                    sliceSupportEnable: false,
+                    // sliceSupportEnable: false,
                     sliceSupportDensity: 0.25,
                     sliceSupportOffset: 1.0,
                     sliceSupportGap: 0.75,
                     sliceSupportSize: 5,
                     sliceSupportArea: 1,
                     sliceSupportExtra: 0,
-                    sliceSupportSpan: 5,
+                    // sliceSupportSpan: 5,
                     sliceSupportAngle: 50,
                     sliceSupportNozzle: 0,
                     sliceSolidMinArea: 1,
diff --git a/src/kiri/init.js b/src/kiri/init.js
index 6a0ae65a..509e1cb6 100644
--- a/src/kiri/init.js
+++ b/src/kiri/init.js
@@ -1606,7 +1606,8 @@
             sliceFillAngle:      UC.newInput(LANG.fi_angl_s, {title:LANG.fi_angl_l, convert:UC.toFloat, modes:FDM, expert:true}),
             sliceFillOverlap:    UC.newInput(LANG.fi_over_s, {title:LANG.fi_over_l, convert:UC.toFloat, bound:UC.bound(0.0,2.0), modes:FDM, expert:true}),
 
-            fdmSupport:          UC.newGroup(LANG.sp_menu, null, {modes:FDM, marker:true}),
+            fdmSupport:          UC.newGroup(LANG.sp_menu, null, {modes:FDM, marker:false}),
+            sliceSupportNozzle:  UC.newSelect(LANG.sp_nozl_s, {title:LANG.sp_nozl_l, modes:FDM, expert:true}, "extruders"),
             sliceSupportDensity: UC.newInput(LANG.sp_dens_s, {title:LANG.sp_dens_l, convert:UC.toFloat, bound:UC.bound(0.05,1.0), modes:FDM}),
             fdmSep:              UC.newBlank({class:"pop-sep", modes:FDM}),
             sliceSupportSize:    UC.newInput(LANG.sp_size_s, {title:LANG.sp_size_l, bound:UC.bound(1.0,200.0), convert:UC.toFloat, modes:FDM}),
@@ -1615,16 +1616,15 @@
             fdmSep:              UC.newBlank({class:"pop-sep", modes:FDM}),
             sliceSupportArea:    UC.newInput(LANG.sp_area_s, {title:LANG.sp_area_l, bound:UC.bound(0.0,200.0), convert:UC.toFloat, modes:FDM}),
             sliceSupportExtra:   UC.newInput(LANG.sp_xpnd_s, {title:LANG.sp_xpnd_l, bound:UC.bound(0.0,200.0), convert:UC.toFloat, modes:FDM, expert:true}),
-            sliceSupportNozzle:  UC.newSelect(LANG.sp_nozl_s, {title:LANG.sp_nozl_l, modes:FDM, expert:true}, "extruders"),
             fdmSep:              UC.newBlank({class:"pop-sep", modes:FDM}),
-            sliceSupportSpan:    UC.newInput(LANG.sp_span_s, {title:LANG.sp_span_l, bound:UC.bound(0.0,200.0), convert:UC.toFloat, modes:FDM, show: () => UI.sliceSupportEnable.checked}),
-            sliceSupportEnable:  UC.newBoolean(LANG.sp_auto_s, onBooleanClick, {title: LANG.sp_auto_l, modes:FDM, trigger:true}),
-            sliceSupportAngle:   LOCAL ? UC.newInput(LANG.sp_angl_s, {title:LANG.sp_angl_l, bound:UC.bound(0.0,90.0), convert:UC.toFloat, modes:FDM}) : null,
+            // sliceSupportSpan:    UC.newInput(LANG.sp_span_s, {title:LANG.sp_span_l, bound:UC.bound(0.0,200.0), convert:UC.toFloat, modes:FDM, show: () => UI.sliceSupportEnable.checked}),
+            // sliceSupportEnable:  UC.newBoolean(LANG.sp_auto_s, onBooleanClick, {title: LANG.sp_auto_l, modes:FDM, trigger:true}),
+            sliceSupportAngle:   UC.newInput(LANG.sp_angl_s, {title:LANG.sp_angl_l, bound:UC.bound(0.0,90.0), convert:UC.toFloat, modes:FDM}),
 
-            fdmSep:              UC.newBlank({class:"pop-sep", modes:FDM}),
-            sliceSupportGen:     LOCAL ? UC.newRow([
+            sliceSupportGen:     UC.newRow([
                 UI.ssaGen = UC.newButton('detect', onButtonClick, {class: "f-col grow a-center"})
-            ], { modes: FDM, class: "ext-buttons f-row grow" }) : null,
+            ], { modes: FDM, class: "ext-buttons f-row grow" }),
+            fdmSep:              UC.newBlank({class:"pop-sep", modes:FDM}),
             sliceSupportManual: UC.newRow([
                 (UI.ssmAdd = UC.newButton(undefined, onButtonClick, {icon:'<i class="fas fa-plus"></i>'})),
                 (UI.ssmDun = UC.newButton(undefined, onButtonClick, {icon:'<i class="fas fa-check"></i>'})),
diff --git a/src/mode/fdm/client.js b/src/mode/fdm/client.js
index 48ac5b1e..9df9253f 100644
--- a/src/mode/fdm/client.js
+++ b/src/mode/fdm/client.js
@@ -35,7 +35,7 @@
         });
         api.event.on("settings.saved", (settings) => {
             let proc = settings.process;
-            api.ui.fdmSupport.marker.style.display = proc.sliceSupportEnable ? 'flex' : 'none';
+            // api.ui.fdmSupport.marker.style.display = proc.sliceSupportEnable ? 'flex' : 'none';
         });
         api.event.on("button.click", target => {
             switch (target) {
@@ -48,8 +48,8 @@
                     });
             }
         });
-        api.event.on("fdm.supports.gen", func.sgen = () => {
-            alert = api.show.alert("analyzing part...", 1000);
+        api.event.on("fdm.supports.detect", func.sgen = () => {
+            alert = api.show.alert("analyzing part(s)...", 1000);
             FDM.support_generate(array => {
                 console.log({generated_supports: array});
                 api.hide.alert(alert);
diff --git a/src/mode/fdm/slice.js b/src/mode/fdm/slice.js
index d2fa576f..ce63036b 100644
--- a/src/mode/fdm/slice.js
+++ b/src/mode/fdm/slice.js
@@ -242,7 +242,6 @@
             }
 
             // calculations only relevant when supports are enabled
-            // if (supportEnabled) {
             {
                 let auto = spro.sliceSupportEnable && spro.sliceSupportDensity > 0.0,
                     minArea = spro.sliceSupportArea;
@@ -807,7 +806,7 @@
      */
     function doSupport(slice, proc, auto, fixed) {
         let minOffset = proc.sliceSupportOffset,
-            maxBridge = proc.sliceSupportSpan,
+            maxBridge = proc.sliceSupportSpan || 5,
             expand = proc.sliceSupportExtra,
             minArea = proc.supportMinArea,
             pillarSize = proc.sliceSupportSize,