Is there a compatibility issue with the nail polish and clearcoat? When reassembling a new playfield I had to back out a ball guide's threaded stud. Despite my best effort, the threads grabbed and chipped the clear and paint. It's under a ramp and completely invisible and it's not possible for the ball to contact the playfield there. Without giving it much thought, I grabbed my kids nail polish and applied a light dab (literally 1/8" x 1/4") in an attempt to seal the crack/chip and prevent its spread.

Did I make my problem worse or is this a nonissue in my case? Vid's quote scares me.