[72c20customcamper]

You have two repaints with unknown quality and or even the type of paint that was used . I would strip it to metal . You would be shocked at what some painters did in the 70s and 80s . I’ve seen guys spray shallac over enamel to paint with lacquer and then dry spraying to keep the checking down to a minimum. Way too many variables to spend the money on paint to have it fail in a few years.