diff --git a/bolex_90_degree_prism.scad b/bolex_90_degree_prism.scad
index 3d462d2..ba58862 100644
--- a/bolex_90_degree_prism.scad
+++ b/bolex_90_degree_prism.scad
@@ -11,7 +11,7 @@ EndD = 6.2;
 PrismXOffset = -0.426;
 PrismYOffset = 5.5; //for 12mm
 
-PrismX = PrismXOffset + ((PrismSize - 12) / 2) + 0.75;
+PrismX = PrismXOffset + ((PrismSize - 12) / 2) + 0.65;
 PrismY = (Y / 2) - (PrismSize / 2) - (PrismYOffset - ((PrismSize - 12) / 2) - 0.5);
 
 OffsetZ = (Z / 2) + (PrismSize - 12) + 0.39 + 2.7;
@@ -30,8 +30,8 @@ module bolex_90_degree_prism () {
 	difference () {
 		translate([0, 0, ]) cube([X, Y, Z], center = true);
         //prism void
-		prism([PrismX, PrismY, (PrismSize / 2) - OffsetZ], rot = [90, 0, 0], [1, 1.05, 1]);
-        translate([PrismX, PrismY, (PrismSize / 2) - OffsetZ + 12.25]) scale([1, 0.9, 1]) cube([12, 12, 12], center = true);
+		prism([PrismX, PrismY, (PrismSize / 2) - OffsetZ], rot = [90, 0, 0], [1, 1.06, 1]);
+        translate([PrismX, PrismY, (PrismSize / 2) - OffsetZ + 12.25]) scale([2, 0.9, 1]) cube([12, 12, 12], center = true);
         translate([PrismX - 11, PrismY, (PrismSize / 2) - OffsetZ]) scale([1, 1, 1.5]) cube([12, 12, 12], center = true);
 		//remove corner
 		translate([-X / 2, 0, Z / 2]) rotate([0, 45, 0]) cube([2, Y + 1, 2], center = true);