diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..5c8bdfc
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+*.stl
+*.3mf
diff --git a/CFTubes.scad b/CFTubes.scad
index f481ca0..342dbef 100644
--- a/CFTubes.scad
+++ b/CFTubes.scad
@@ -214,9 +214,10 @@ module ubass_tuner() {
 	d_screw = 2.0;  // As we will screw into this, probably don't need tolerance yet
 	screw_tab_min_w = 1.6;
 	screw_tab_min_thick = 2.0;
-	d_screw_tab = 5.2+0.3;  // Tolerance this though!
-	back_of_thread_to_tab_tip = 20.7 + 0.1;
-	middle_of_thread_to_tab_screw = back_of_thread_to_tab_tip - d_thread/2 - screw_tab_min_w;
+	d_screw_tab = 5.2+0.4;  // Tolerance this though!
+	// back_of_thread_to_tab_tip = 20.7 + 0.1; // 17.1 measuring far hole end to hole end, 6.9 measuring close ends gives average of 12.0
+	middle_of_thread_to_tab_screw = 12.0; //back_of_thread_to_tab_tip - d_thread/2 - screw_tab_min_w;  == 13.7
+	echo(middle_of_thread_to_tab_screw);
 
 	module tuner_footprint() {
 		hull() {
@@ -229,9 +230,18 @@ module ubass_tuner() {
 		translate([0, -middle_of_thread_to_tab_screw]) circle(d=d_thread, $fn=72);
 	}
 
-	linear_extrude(max_thread) difference() {
-		offset(4, 3) tuner_footprint();
-		holes();
+	difference() {
+		linear_extrude(max_thread) difference() {
+			offset(4, 3) tuner_footprint();
+			holes();
+		}
+		translate([0,0,max_thread-0.2]) linear_extrude(1) {
+			translate([-3.5,-2]) text(str(d_screw), size=2.5);
+			translate([  0, -4]) rotate(30) text(str(d_screw_tab), size=2.5);
+			translate([4.4, -7]) rotate(90) text(str(middle_of_thread_to_tab_screw), size=2.5);
+			translate([-9.5,-13.5]) text(str(d_thread), size=2.5);
+			translate([-12,-27]) text(str(d_peg_collar_max), size=2.5);
+		}
 	}
 	translate([0,0,max_thread]) linear_extrude(10) difference() {
 		offset(4, 3) tuner_footprint();