Larger depth + diameter, with flattened screw hole for medium Lego Wall Hangar

Just a simple mod I made to accommodate the screws I have available and save myself a trip to the hardware store. If anyone needs the same done to any of the other sizes just comment and I'll get it done. 

Increased the depth and diameter of the screw hole, as well as flattened to accommodate for non-beveled screw heads.