Doing a playfield restoration for a friend on Captain Fantastic. Pop bumpers had adhesive mylar platters that I was very reluctant to remove as the topcoat isn't very thick. But because there a little crud under the mylar, I made the executive decision to go for it.
I used the freeze method. After the mylar was removed, the glue was still on the pf, which I removed using naphtha and a plastic razor blade. Very pleased with the results.