I’ve seen lots of people say they use red loctite with their wheel spacers. Apparently they don’t know how to torque them properly or something.

Yeah rotary tool is what I meant by dremel. Heck you could file them by hand, or use a hack saw, it’d just be slow.

The notch in the backing plate makes it look like you’re in the right spot, what’s it getting hung up on? The head of the stud on the knuckle side of the bearing? Can you angle it more at all?

If not get a file or a dremel and grind down one side of the head enough to clear. You may need to do the same to the replacement.

Turn the AC on but with the temp up or crack a window, it’ll help keep your breath from fogging up the windshield.