Thrustmaster T150 mounting nut replacement

My GF bought me a used driving wheel for PS4 (yay, best GF in world *g*), but the mounting nut was not a part of the wheel anymore... Somehow the pre-owner damaged it. I did not quite understand how to fix it, so I created the replacement part in f360, and iteration 2 was fitting really nice. The hole is just wide enough to allow the mounting bold to screw in tightly. The plate is having some rails which press into the metal to keep it in place and prevent turning. At least a little. First tr