I've been working part time on an AMT 1964 Cutlass Convertible. I had it sprayed with Duplicolor primer.. And had one oat of Duplicolor Oldsmobile green on it. Same green I have on the 1966 Cutlass Convertible. Sat a week or two. Needed another coat. Same paint. Sprayed it. And it wrinkled all up. Don't know why. No pictures because I just threw it right into the purple pond. I'm at a point I think I might just build the kits like I did as a kid. Forget painting them. Too frustrating.