diff --git a/app/data/cfg.json b/app/data/cfg.json
index 0ffe6fd..25345c5 100644
--- a/app/data/cfg.json
+++ b/app/data/cfg.json
@@ -1,5 +1,5 @@
 {
-  "version": "1.8.81",
+  "version": "1.8.82",
   "ext_port": 1111,
   "profiles": {
     "mcopy": {
diff --git a/app/package-lock.json b/app/package-lock.json
index 4212838..c38a0d7 100644
--- a/app/package-lock.json
+++ b/app/package-lock.json
@@ -1,6 +1,6 @@
 {
   "name": "mcopy-app",
-  "version": "1.8.81",
+  "version": "1.8.82",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
diff --git a/app/package.json b/app/package.json
index 034d0b0..79bdee8 100644
--- a/app/package.json
+++ b/app/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mcopy-app",
-  "version": "1.8.81",
+  "version": "1.8.82",
   "description": "GUI for the mcopy small gauge film optical printer platform",
   "main": "main.js",
   "scripts": {
diff --git a/data/cfg.json b/data/cfg.json
index 6807c2d..3febfdf 100644
--- a/data/cfg.json
+++ b/data/cfg.json
@@ -1,5 +1,5 @@
 {
-  "version": "1.8.81",
+  "version": "1.8.82",
   "ext_port": 1111,
   "profiles": {
     "mcopy": {
diff --git a/package-lock.json b/package-lock.json
index a6cee0f..2d15a06 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "mcopy",
-  "version": "1.8.81",
+  "version": "1.8.82",
   "lockfileVersion": 2,
   "requires": true,
   "packages": {
     "": {
       "name": "mcopy",
-      "version": "1.8.81",
+      "version": "1.8.82",
       "license": "MIT",
       "dependencies": {
         "arduino": "file:app/lib/arduino",
diff --git a/package.json b/package.json
index e91b6b0..60fd26a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "mcopy",
-  "version": "1.8.81",
+  "version": "1.8.82",
   "description": "Small gauge film optical printer platform",
   "main": "build.js",
   "directories": {
diff --git a/processing/mcopy/cfg.json b/processing/mcopy/cfg.json
index 0ffe6fd..25345c5 100644
--- a/processing/mcopy/cfg.json
+++ b/processing/mcopy/cfg.json
@@ -1,5 +1,5 @@
 {
-  "version": "1.8.81",
+  "version": "1.8.82",
   "ext_port": 1111,
   "profiles": {
     "mcopy": {
diff --git a/scad/cpc_connectors.scad b/scad/cpc_connectors.scad
index e36975d..1648c2a 100644
--- a/scad/cpc_connectors.scad
+++ b/scad/cpc_connectors.scad
@@ -11,7 +11,9 @@ FN = 120;
 PlugD = 16.15 - 0.6;
 PlugH = 11.65;
 PlugGuideD = 17 - 0.6;
-PlugPinD = 3.1;
+PlugPinD1 = 1.9;
+PlugPinD2 = 2.9;
+PlugPinD3 = 3.9;
 
 PlugGuideRetraction = 1.25;
 
@@ -19,31 +21,44 @@ PinSpacing = 3.85;
 
 SocketD = 16.15;
 SocketGuideD = 17.5;
-
 SocketOuterD = 20;
 SocketH = 10.5;
+SocketPinD = 3.1;
 
 CollarD = 22;
 
 GuideAngles = [0,   100, 140, 215, 260];
 GuideWidths = [3.2, 1.5, 1.5, 1.5, 1.5];
 
+DEBUG = false;
+
 function arc_angle (D, W) = W / ((PI/180) * (D/2));
 
 module guide (Diameter, Height, Angle, Width) {
 	A = arc_angle(Diameter, Width);
 	echo(A);
-	rotate([0, 0, Angle]) difference () {
-		cylinder(r = R(Diameter), h = Height, center = true, $fn = FN);
-		rotate([0, 0, -A/2]) translate([Diameter / 2, 0, 0])  cube([Diameter, Diameter * 2, Height + 1], center = true);
-		rotate([0, 0, A/2]) translate([-Diameter / 2, 0, 0])  cube([Diameter, Diameter * 2, Height + 1], center = true);
+	if (!DEBUG) {
+		rotate([0, 0, Angle]) difference () {
+			cylinder(r = R(Diameter), h = Height, center = true, $fn = FN);
+			rotate([0, 0, -A/2]) translate([Diameter / 2, 0, 0])  cube([Diameter, Diameter * 2, Height + 1], center = true);
+			rotate([0, 0, A/2]) translate([-Diameter / 2, 0, 0])  cube([Diameter, Diameter * 2, Height + 1], center = true);
+		}
 	}
 }
 
 //
-module plug_pin (X, Y, H) {
+module plug_pin (X = 0, Y = 0, H = 10) {
+	translate([X, Y, 0]) rotate([180, 0, 0]) {
+		cylinder(r = R(PlugPinD3), h = H, center = true, $fn = 40);
+		translate([0, 0, -(H / 2) - (3.1 / 2)]) cylinder(r = R(PlugPinD2), h = 3.11, center = true, $fn = 40);
+		translate([0, 0, -(H / 2) - 3.1 - (0.7 / 2)]) cylinder(r1 = R(PlugPinD1), r2 = R(PlugPinD2), h = 0.72, center = true, $fn = 40);
+		translate([0, 0, -(H / 2) - 3.1 - 0.7 - (8 / 2)]) cylinder(r = R(PlugPinD1), h = 8.01, center = true, $fn = 40);
+	}
+}
+
+module socket_pin (X = 0, Y = 0, H = 10) {
 	translate([X, Y, 0]) {
-		cylinder(r = R(PlugPinD), h = H, center = true, $fn = 40);
+		cylinder(r = R(SocketPinD), h = H, center = true, $fn = 40);
 	}
 }
 
@@ -66,33 +81,60 @@ module plug_pin_voids (PinH) {
 	plug_pin(PinSpacing, -PinSpacing, PinH);  //7
 }
 
+module socket_pin_voids (PinH) {
+	socket_pin(0, 0, PinH);                     //5
+	socket_pin(PinSpacing, 0, PinH);            //4
+	socket_pin(-PinSpacing, 0, PinH);           //6
+	socket_pin(0, PinSpacing, PinH);            //2
+	socket_pin(0, -PinSpacing, PinH);           //8
+	socket_pin(PinSpacing, PinSpacing, PinH);   //1
+	socket_pin(-PinSpacing, PinSpacing, PinH);  //3
+	socket_pin(-PinSpacing, -PinSpacing, PinH); //9
+	socket_pin(PinSpacing, -PinSpacing, PinH);  //7
+}
+
 module cpc_9pin_plug () {
 	$fn = FN;
 	PinH = PlugH + 1;
 	difference () {
 		union () {
 			cylinder(r = R(PlugD), h = PlugH, center = true);
-			translate([0, 0, -(PlugH/2)+(2/2)]) cylinder(r = R(PlugD + 2), h = 2, center = true);
+			//translate([0, 0, -(PlugH/2)+(2/2)]) cylinder(r = R(PlugD + 2), h = 2, center = true);
 			translate([0, 0, -PlugGuideRetraction/2]) {
 				for (i = [0 : len(GuideAngles) - 1]) {
 					guide(PlugGuideD, PlugH - PlugGuideRetraction, GuideAngles[i], GuideWidths[i]);
 				}
 			}
 		}
-		plug_pin_voids(PinH);
+		translate([0, 0, -7]) cylinder(r = R(PlugD) - 0.5, h = PlugH, center = true);
+		translate([0, 0, -5]) plug_pin_voids(PinH);
 	}
+}
 
+module cpc_9pin_plug_insert () {
+	$fn = FN;
+	BaseH = 3;
+	translate([0, 0, -5.75]) difference () {
+		union () {
+			cylinder(r = R(PlugD - 1.2), h = 6, center = true);
+			translate([0, 0, -1]) cylinder(r = R(PlugD + 2.5), h = 2, center = true);
+			color("green") translate([0, 0, -7]) cylinder(r = R(PlugD + 1.2), h = 10, center = true);
+		}
+		cylinder(r = R(PlugD - 2.2), h = 30, center = true);
+	}
 }
 
 module cpc_9pin_plug_collar () {
 	$fn = FN;
-	H = 25;
+	H = 10;
 
 	difference () {
 		union () {
-			cylinder(r = R(CollarD), h = H, center = true);
+			cylinder(r = R(23), h = H, center = true);
 		}
-		cylinder(r = R(SocketD), h = H, center = true);
+		cylinder(r = R(17), h = H + 1, center = true);
+		cylinder(r = R(21), h = H - 4, center = true);
+		translate([0, 0, H / 2]) cylinder(r = R(19), h = H, center = true);
 	}
 }
 
@@ -103,16 +145,18 @@ module cpc_9pin_plug_back () {
 module flange_guide_void (pos = [0, 0, 0], Z = 8) {
 	OD = 24;
 	ID = 19;
-	translate(pos) {
-		intersection () {
-			difference () {
-				cylinder(r = R(OD), h = Z, center = true);
-				cylinder(r = R(ID), h = Z + 1, center = true);
-			}
-			union () {
-				translate([0, 0, 1]) cube([5, 25, Z], center = true);
-				translate([0, 0, -3]) rotate([7, 0, 0]) translate([(OD/2)-(5/2), OD/4, 0]) cube([OD, OD/2, 3], center = true);
-				translate([0, 0, -3]) rotate([-7, 0, 0]) translate([-(OD/2)+(5/2), -OD/4, 0]) cube([OD, OD/2, 3], center = true);
+	if (!DEBUG) {
+		translate(pos) {
+			intersection () {
+				difference () {
+					cylinder(r = R(OD), h = Z, center = true);
+					cylinder(r = R(ID), h = Z + 1, center = true);
+				}
+				union () {
+					translate([0, 0, 1]) cube([5, 25, Z], center = true);
+					translate([0, 0, -3]) rotate([7, 0, 0]) translate([(OD/2)-(5/2), OD/4, 0]) cube([OD, OD/2, 3], center = true);
+					translate([0, 0, -3]) rotate([-7, 0, 0]) translate([-(OD/2)+(5/2), -OD/4, 0]) cube([OD, OD/2, 3], center = true);
+				}
 			}
 		}
 	}
@@ -141,7 +185,7 @@ module cpc_9pin_socket () {
 			}
 		}
 
-		plug_pin_voids(PinH);
+		socket_pin_voids(PinH);
 		translate([0, 0, 3]) rotate([0,0, 37]) flange_guide_void([0, 0, (PlugH / 2) - (8 / 2) + 0.01], 8);
 		translate([0, 0, -((SocketH + BaseH) / 2) + (BaseH / 2)]) {
 			m3_bolt_void([BoltVoid/2,   BoltVoid/2, 0], BaseH + 1);
@@ -150,14 +194,15 @@ module cpc_9pin_socket () {
 			m3_bolt_void([-BoltVoid/2, -BoltVoid/2, 0], BaseH + 1);
 		}
 	}
-	
 }
 
 module debug () {
+	//cpc_9pin_plug();
 	difference () {
 		union () {
-			cpc_9pin_plug();
-			translate([0, 0, 13]) cpc_9pin_socket();
+			color("green") translate([0, 0, 2.1]) rotate([180, 0, 0]) cpc_9pin_socket();
+			cpc_9pin_plug_insert();
+			translate([0, 0, -5]) cpc_9pin_plug_collar();
 		}
 		translate([25, 0, 0]) cube([50, 50, 100], center = true);
 	}
@@ -165,6 +210,8 @@ module debug () {
 
 if (PART == "9pin_plug") {
 	cpc_9pin_plug();
+} else if (PART == "9pin_plug_insert") {
+	cpc_9pin_plug_insert();
 } else if (PART == "9pin_plug_collar") {
 	cpc_9pin_plug_collar();
 } else if (PART == "9pin_socket") {