diff --git a/scad/bolex_base_plate.scad b/scad/bolex_base_plate.scad
index b5a017c..140a7b3 100644
--- a/scad/bolex_base_plate.scad
+++ b/scad/bolex_base_plate.scad
@@ -10,7 +10,7 @@ module bolex_debug (pad = 0) {
     translate([0, 0, 12.51]) cylinder(r = R(33), h = 3, center = true, $fn = 90);
     
     translate([3 + 18.5, 17 + 1.5, 50 - 4]) rotate([0, 90, 0]) cylinder(r = R(100), h = 36, center = true, $fn = 180);
-    translate([5.55, 0 + 3, 39]) rotate([0, 90, 0]) rounded_cube([50, 135, 67.9], d = 20, center = true, $fn = 50);
+    translate([5.55, 0 + 4, 38]) rotate([0, 90, 0]) rounded_cube([50, 135, 67.9], d = 20, center = true, $fn = 50);
 }
 
 module debug () {
@@ -45,7 +45,7 @@ module base_plate (pos = [0, 0, 0], rot = [0, 0, 0], rails = "15mm") {
     translate(pos) rotate(rot) {
         difference () {
             union () {
-                rotate([0, 90, 0]) rounded_cube([31, 90.5, 55.3], d = 4, center = true, $fn = 40);
+                translate([0, 40 / 2, 0]) rotate([0, 90, 0]) rounded_cube([31, 90.5 + 40, 55.3], d = 4, center = true, $fn = 40);
                 if (rails == "15mm") {
                     translate([60 / 2, -20, Rails15mmZ]) {
                         rotate([90, 0, 0]) cylinder(r = R(24), h = 20, center = true, $fn = 60);
@@ -66,10 +66,11 @@ module base_plate (pos = [0, 0, 0], rot = [0, 0, 0], rails = "15mm") {
                     }
                 }
                 cylinder(r = R(10), h = 60, center = true, $fn = 40);
-                translate([0, 0, -38]) cylinder(r = R(17), h = 60, center = true, $fn = 40);
+                translate([0, 0, -37]) cylinder(r = R(17), h = 60, center = true, $fn = 40);
                 bolt_voids();
             }
-            translate([-20, 58, 0]) cube([40, 40, 40], center = true);
+            translate([-20, 52, 0]) cube([40, 30, 40], center = true);
+            translate([0, 77.8, -9]) rotate([0, 90, 0]) cylinder(r = R(5.25), h = 100, center = true, $fn = 50);
             translate([0, 7.8, -9]) rotate([0, 90, 0]) cylinder(r = R(5.25), h = 100, center = true, $fn = 50);
             translate([0, -37.8, -9]) rotate([0, 90, 0]) cylinder(r = R(5.25), h = 100, center = true, $fn = 50);