diff --git a/js/kiri-driver-fdm.js b/js/kiri-driver-fdm.js
index 86236b92..dc77f072 100644
--- a/js/kiri-driver-fdm.js
+++ b/js/kiri-driver-fdm.js
@@ -597,7 +597,7 @@ var gs_kiri_fdm = exports;
                 }
 
                 // update time and distance (should calc in moveTo() instead)
-                time += (dist / speedMMM) * 60;
+                time += (dist / speedMMM) * 60 * 1.5;
                 distance += dist;
                 progress = Math.round((distance / totaldistance) * 100);
 
diff --git a/js/kiri-print.js b/js/kiri-print.js
index 425ae4d5..7f8acc99 100644
--- a/js/kiri-print.js
+++ b/js/kiri-print.js
@@ -501,6 +501,19 @@ var gs_kiri_print = exports;
             if (preout.length) preout.last().retract = true;
         }
 
+        function intersectsTop(p1, p2) {
+            var int = false;
+            slice.tops.forEach(function(top) {
+                if (!int) top.poly.forEachSegment(function(s1, s2) {
+                    if (UTIL.intersect(p1,p2,s1,s2,BASE.key.SEGINT)) {
+                        int = true;
+                        return int;
+                    }
+                });
+            });
+            return int;
+        }
+
         function outputTraces(poly, bounds) {
             if (!poly) return;
             if (Array.isArray(poly)) {
@@ -534,7 +547,10 @@ var gs_kiri_print = exports;
                 var poly = el.poly;
                 if (poly.last() === point) poly.reverse();
                 poly.forEachPoint(function(p, i) {
-                    if (i === 0 && lp && lp.distTo2D(p) > retractDistSparse) retract();
+                    // retract if dist trigger and crosses a slice top polygon
+                    if (i === 0 && lp && lp.distTo2D(p) > retractDistSparse && intersectsTop(lp,p)) {
+                        retract();
+                    }
                     addOutput(preout, p, i === 0 ? 0 : sparseMult, printSpeed);
                     lp = p;
                 });
@@ -581,7 +597,10 @@ var gs_kiri_print = exports;
                         addOutput(preout, p2, fillMult * (find.d / thinWall), printSpeed);
                         lastout = 1;
                     } else {
-                        if (dist > retractDist) retract();
+                        // retract if dist trigger and crosses a slice top polygon
+                        if (dist > retractDist && intersectsTop(startPoint, p1)) {
+                            retract();
+                        }
 
                         // bridge ends of fill when they're close together
                         if (dist < thinWall) {
diff --git a/js/kiri.js b/js/kiri.js
index 85ff72b4..12e4d8ad 100644
--- a/js/kiri.js
+++ b/js/kiri.js
@@ -263,9 +263,9 @@ self.kiri.license = exports.LICENSE;
                 sliceSupportEnable: false,
                 sliceSupportDensity: 0.25,
                 sliceSupportOffset: 1.0,
-                sliceSupportSize: 4,
+                sliceSupportSize: 10,
                 sliceSupportArea: 1,
-                sliceSupportExtra: 1,
+                sliceSupportExtra: 0,
                 sliceSupportSpan: 6,
 
                 sliceSolidMinArea: 0.1,
@@ -281,16 +281,16 @@ self.kiri.license = exports.LICENSE;
                 outputTemp: 220,
                 outputFanMax: 255,
                 outputBedTemp: 0,
-                outputFeedrate: 100,
+                outputFeedrate: 80,
                 outputFinishrate: 60,
-                outputSeekrate: 150,
+                outputSeekrate: 100,
                 outputShellMult: 1.1,
                 outputFillMult: 1.2,
                 outputSparseMult: 1.3,
                 outputRetractOver: 5.0,
                 outputRetractDist: 0.5,
-                outputRetractSpeed: 20,
-                outputRetractDwell: 50,
+                outputRetractSpeed: 40,
+                outputRetractDwell: 20,
                 outputBrimCount: 2,
                 outputBrimOffset: 3,
                 outputShortPoly: 15.0,
diff --git a/js/license.js b/js/license.js
index 9f5f8776..f29e33d7 100644
--- a/js/license.js
+++ b/js/license.js
@@ -1,7 +1,7 @@
 var exports = {
     COPYRIGHT:"Copyright (C) 2014-2017 Stewart Allen <stewart@neuron.com> - All Rights Reserved",
     LICENSE:"Unauthorized copying, modification and re-distribution are strictly prohibited without prior written consent.",
-    VERSION:"1.0.87"
+    VERSION:"1.0.88"
 };
 if (!module) var module = {};
 module.exports = exports;