Well, if the man himself is telling me the screw heads should be left on, I guess I've got some more work to do with this lid. I have enjoyed every moment of thie process of putting this kit together, from communicating with Bree, to picking up my kit and meeting Jim, who was gracious as could be, (even giving us a tour of the shop and offering to put the box in the truck for me, even though I'm at least twice his size), to working on the actual gun itself. Quality, worth every penny.