jamesdak,
Back in 1970 we were all buying Dodge Super Bee's and the six pack was the car of choice, they only made 500 of them, but we all tried different things to set our car apart from the rest. A buddy decided to use a lace pattern paint on the top like the vinyl tops. We waxed it down and then painted a black paint on top of the car like we wanted it. We found out that we could just use normal cleaner wax to remove the top coat of paint, with no damage. I would try the waxing thing before any other process, and then mild heat on the over-paint as I have suggested before. Or even with the cleaner wax with some mild heat. HTH, MH