I have been painting the interior trim pieces and all of them have turned out fine except for the radio trim bezel. This piece has paint "crackles" all over it. The paint goes on fine, but after I let it dry, the paint is smooth in one area and crinkled in another. It almost looks as if someone rubbed a chemical on it. I have done nothing different on this piece than any of the others. Any ideas on how to fix this and avoid it in the future?