diff --git a/index.html b/index.html
index 1178f57..519804d 100644
--- a/index.html
+++ b/index.html
@@ -1737,23 +1737,23 @@
                         labelLayers[v.id].addTo(map);
                     }
 
-                    // Allow vertex insertion by clicking anywhere on the polyline
-                    routeLayers[v.id].on('click', (e) => {
-                        if (!v.active) return;
-                        if (!map.editTools) return;
-                        
-                        L.DomEvent.stopPropagation(e);
-                        
-                        const layer = routeLayers[v.id];
                         const point = e.latlng;
                         const latlngs = layer.getLatLngs();
-                        const vertexIndex = findClosestSegmentIndex(latlngs, point);
+                        
+                        // Use Turf for much better snapping to the line
+                        const line = turf.lineString(latlngs.map(ll => [ll.lng, ll.lat]));
+                        const snapped = turf.nearestPointOnLine(line, [point.lng, point.lat]);
+                        const snappedPt = L.latLng(snapped.geometry.coordinates[1], snapped.geometry.coordinates[0]);
+                        
+                        // Find where to insert it based on the snap result
+                        const vertexIndex = findClosestSegmentIndex(latlngs, snappedPt);
                         
                         if (vertexIndex !== -1) {
-                            latlngs.splice(vertexIndex + 1, 0, point);
+                            latlngs.splice(vertexIndex + 1, 0, snappedPt);
                             layer.setLatLngs(latlngs);
                             if (layer.editor) layer.editor.refresh();
                             
+                            v.routes = latlngs.map(ll => ({ lat: ll.lat, lng: ll.lng }));
                             calculateStats(v);
                             updateVariantStatsUI(v);
                             updateRouteLabels(v);
@@ -2067,7 +2067,8 @@
             const vDrill = drillingLayers[variant.id];
             if (vDrill) vDrill.clearLayers();
 
-            const latLngs = (variant.routes || []).map(ll => {
+            const layer = routeLayers[variant.id];
+            const latLngs = layer ? layer.getLatLngs() : (variant.routes || []).map(ll => {
                 try { return L.latLng(ll); } catch(e) { return null; }
             }).filter(p => !!p && typeof p.lat === 'number');
 
@@ -2077,7 +2078,7 @@
             variant.stats.hasTooLongDrilling = false;
             variant.drillingSegments = [];
 
-            if (latLngs.length < 2) {
+            if (!latLngs || latLngs.length < 2) {
                 renderSegmentLabels(variant);
                 return;
             }