Has anyone possibly had this problem that I have. I had an rad support sandblasted, applied 2 coats of PPG epoxy primer, and then after about 2 hrs., applied the chassis black from Eastwood. Looked great. This was about 1 week ago. I started to get all my parts in order to start assembly, and I took the air hose and blew the dust off of the support, and off came the paint. The primer on the support was good, just the paint came off, big flakes. Bad adhesion between the two for some reason. Moisture was not a problem.I use a refrigerant drier and desiccant canister. This is probably the first time I've run into the problem, looking for answers..