bolthole_height = 4.24 + 1.00;
wall_thick = 4.50;
bolthole_width = 16.62 + 1.00;
-main_sz = 149.06 + 0.50;
-cnr_rad = 18; // think this is more like 20; // approx
+main_sz = 149.06 - 0.25;
+cnr_rad = 19.5;
lidinner_thick_allow = 20.78 + 0.50;
display_width = 69.81 - 0.50;