diff --git a/js/geo-polygons.js b/js/geo-polygons.js
index c690f517..d56bcd63 100644
--- a/js/geo-polygons.js
+++ b/js/geo-polygons.js
@@ -626,8 +626,10 @@ var gs_base_polygons = exports;
             var p1 = newPoint(start.x - raySlope.dx * 1000, start.y - raySlope.dy * 1000, zpos, NOKEY),
                 p2 = newPoint(start.x + raySlope.dx * 1000, start.y + raySlope.dy * 1000, zpos, NOKEY);
 
+            // store origin line for distance tests in print
+            if (i == 0) rayint.oline = [p1,p2];
+            
             lines.push([p1,p2]);
-
             start.x += stepX;
             start.y += stepY;
         }
diff --git a/js/kiri-print.js b/js/kiri-print.js
index 0e2405df..54aa8cd5 100644
--- a/js/kiri-print.js
+++ b/js/kiri-print.js
@@ -567,12 +567,14 @@ var gs_kiri_print = exports;
         }
 
         function outputFills(lines, bounds) {
-            var mindist, p1, p2, dist, point, find, list, len, lastout, pass = 0, origin;
+            var mindist, p1, p2, dist, point, find, list, len, lastout, origin, lastDist2Origin,
+                skip = false,
+                pass = 0;
 
             while (lines) {
                 list = [];
                 mindist = Infinity;
-                origin = antiBacklash && pass === 0 ? lines.origin : startPoint;
+                origin = skip || (antiBacklash && pass === 0) ? lines.origin : startPoint;
                 // order all points by distance to last point
                 for (i=0; i<lines.length; i++) {
                     point = lines[i];
@@ -595,6 +597,20 @@ var gs_kiri_print = exports;
 
                     dist = startPoint.distTo2D(p1);
 
+                    // find next closest to fill origin on seek
+                    if (antiBacklash) {
+                        var dist2Origin = p1.distToLine(lines.oline[0], lines.oline[1]);
+                        if (!skip) {
+                            if (lastDist2Origin && dist2Origin < lastDist2Origin) {
+                                lastDist2Origin = null;
+                                skip = true;
+                                continue;
+                            }
+                        }
+                        lastDist2Origin = dist2Origin;
+                    }
+                    skip = false;
+
                     // mark as used (temporary)
                     p1.del = true;
                     p2.del = true;
@@ -616,7 +632,7 @@ var gs_kiri_print = exports;
 
                         // anti-backlash take out slack by moving toward origin
                         if (antiBacklash && dist > retractDist) {
-                            addOutput(preout, p1.add({x:1,y:-1,z:0}), 0, moveSpeed);
+                            addOutput(preout, p1.add({x:2,y:-2,z:0}), 0, moveSpeed);
                         }
 
                         // bridge ends of fill when they're close together
diff --git a/js/kiri.js b/js/kiri.js
index 3e20bb85..79347428 100644
--- a/js/kiri.js
+++ b/js/kiri.js
@@ -260,7 +260,7 @@ self.kiri.license = exports.LICENSE;
 
                 sliceHeight: 0.25,
                 sliceShells: 2,
-                sliceShellSpacing: 1,
+                sliceShellSpacing: 1.0,
                 sliceFillAngle: 45,
                 sliceFillOverlap: 0.3,
                 sliceFillSpacing: 1.0,
@@ -275,10 +275,10 @@ self.kiri.license = exports.LICENSE;
                 sliceSupportExtra: 0,
                 sliceSupportSpan: 6,
 
-                sliceSolidMinArea: 0.1,
-                sliceSolidLayers: 2,
+                sliceSolidMinArea: 5,
+                sliceSolidLayers: 3,
                 sliceBottomLayers: 2,
-                sliceTopLayers: 2,
+                sliceTopLayers: 3,
                 sliceVase: false,
 
                 firstSliceHeight: 0.25,
@@ -298,13 +298,13 @@ self.kiri.license = exports.LICENSE;
                 outputFillMult: 1.2,
                 outputSparseMult: 1.3,
                 outputRetractOver: 5.0,
-                outputRetractDist: 0.5,
+                outputRetractDist: 1.0,
                 outputRetractSpeed: 40,
-                outputRetractDwell: 20,
+                outputRetractDwell: 30,
                 outputBrimCount: 2,
-                outputBrimOffset: 3,
+                outputBrimOffset: 2,
                 outputShortPoly: 15.0,
-                outputShortDistance: 5.0,
+                outputShortDistance: 0.0,
                 outputShortFactor: 0.2,
                 outputFinishFactor: 0,
                 detectThinWalls: false,