After sleeping on the cup washer idea I decided to just make them. Was really simple. A washer and a piece or pipe. Got the floor welded in and the firewall tacked in place. Slowly making progress! Had to get creative with the ratchet strap to straighten the firewall! Next I’m going to replace the steps then order hinges and fit doors. I’m not going to weld the center of the floor together yet. Figure I might have to move it to adjust door gaps. We’ll see