Weather or not a car has a coating,you need to remove the clear responsibly to remove the spots.and trust me,they will reappear sitting in the sun at a show on a so called collector car.so I fail to understand your point?
I don't know why I waited so long to try Griots, but since Rod Kraft went to work for them, I have been converted and love everything that I've used!Nice work!
Softer pad for the final polish would be the first thing I would try. Not familiar with the menzerna products,so I would recommend Griots perfecting cream. I've been doing a lot with Griots and really like them.
If I do a car that has water spots I use the IR lamp to make sure the spot are gone. If not I do what is needed to remove the remaining marks. Obviously measuring the paint as I go. We coat a lot of collector cars mainly for the ease of maintenance for the client, but as a side effect they look...