A2S dESING's original model had a component ("nut2.stl") which was too short to fit my vehicle. The screw which held that in place ("screw3.stl") was also a little weak and half of the head snapped off.

They didn't share the source file, so I modeled a new version of both with +0.5 inch and +1.0 inch options for the nut. For the screw, I left more material in to better reinforce the head.