I have had a lot of success removing Mylar on a non clearcoated funhouse and cc playfields like T2 but I bailed out on my space invaders. Got little dots of paint missing after only removing little Mylar. I will be removing Mylar from my spare playfield but that's way off. I'd be a little hesitant but if you're going for it, use the heat method with maybe shellite to aid. I just used the shellite with ok results but not good enough for the si playfield restore.
I'm slowly touching up my si playfield and its not easy. I thought some areas would be not difficult but i was wrong, I'm still experimenting. Colour matching is major work. Solid colour touch ups are easier but get the colour off and no matter how good a painter you are it sticks out. The up side for me is my game is still playable while I stuff around and try to achieve perfection on the restoring playfield. The down side is my first playfield restore is probably on one of the toughest playfield artworks around. But I'm having major fun
