implement suggestions from review

flexifly-merged.kicad_prl

@@ -1,6 +1,6 @@
 {
   "board": {
-    "active_layer": 37,
+    "active_layer": 44,
     "active_layer_preset": "",
     "auto_track_width": true,
     "hidden_netclasses": [],

flexifly.kicad_prl

@@ -64,7 +64,7 @@
       39,
       40
     ],
-    "visible_layers": "ffcffff_ffffffff",
+    "visible_layers": "ff8efff_ffffffff",
     "zone_display_mode": 0
   },
   "meta": {

flexifly.kicad_pro

@@ -45,7 +45,7 @@
         "silk_text_thickness": 0.15,
         "silk_text_upright": false,
         "zones": {
-          "min_clearance": 0.3
+          "min_clearance": 0.19999999999999998
         }
       },
       "diff_pair_dimensions": [
@@ -188,7 +188,7 @@
           "drill": 0.0
         },
         {
-          "diameter": 0.3,
+          "diameter": 0.4,
           "drill": 0.2
         },
         {