I don't have the truck with me tonight as I've got a fellow rebuilding the carb for me. I'll check it out tomorrow, but I could swear the 4 screws running across the bottom actually screwed into a plastic nut that you have to push into the 4 square holes I'm seeing along the bottom edge. However, I don't remember and may be wrong, I'll check it out tomorrow when I get the truck back. I've got 's catalog, and have ordered quite a lot from them already. They don't have what I was describing though. I'm having a time trying to get everything "tightened" up on this truck though. The rattles are deafening when I hit bumps or go over tracks. I'm just trying to eliminate them one at a time. One day...