I try my best to not get involved in certain situations. I don't do low end work. BUT, I have a kid that helps me from time to time and his grandfather gave him his truck. It's scratched up and needs a door. Anyway, for 80% of it, I just want to prep and shoot over the factory paint like doing a collision repair. The issue is this kid puts some kind of tire and trim goo on his truck every week. It's going to be fish eye hell. Anyone that deals with this often, what process do you recommend I clean this thing with before I ever touch it with sandpaper. It's so bad, that if I get it clean and touch the grill, I probably shouldn't touch anything in the shop.