diff --git a/shroud.scad b/shroud.scad
index 4b2779b..1b001cc 100644
--- a/shroud.scad
+++ b/shroud.scad
@@ -11,9 +11,9 @@ hd = 38;
 lhf = 32;
 rc = 4;
 /* heatsink size */
-lh = 30;
-wh = 26;
-th = 16;
+lh = 30.2;
+wh = 26.2;
+th = 16.2;
 ofsx = 0;
 ofsy = 0;
 ofsz = 3.5;
@@ -70,7 +70,7 @@ difference(){
         }
         hull(){
             translate([lf/2,lf/2, wt-0.1])cylinder(h=0.1,d=hd+2*wt);
-            translate([lf/2-wh/2-wt+ofsx,lf/2-lh/2+ofsy,t-th+ofsz])cube([wh+2*wt,lh,0.01]);
+            translate([lf/2-wh/2-wt+ofsx,lf/2-lh/2+ofsy-wt,t-th+ofsz])cube([wh+2*wt,lh+2*wt,0.01]);
         }
         translate([lf/2-wh/2-wt+ofsx,lf/2-lh/2+ofsy,t-th+ofsz])cube([wh+2*wt,lh,th]);
         for(x=[48]){
diff --git a/stl/shroud.stl b/stl/shroud.stl
index b283736..0f86331 100644
Binary files a/stl/shroud.stl and b/stl/shroud.stl differ