I had some parts that i had primed with a moisture cured urethane primer some time ago. I wanted to see if your chassis black paint was compatible so i bought a spray can and tested it on one part. Everything looked good but i didnt put more then one coat on. Last weekend i sprayed a bunch more parts. The air temperature was around 70 and the humidity was probably around 50%. Yesterday i took a look at the parts and i noticed in areas were the paint went on two thick it crazed. I sanded it down and tried to spray it on thin but i cant get it to flow out nice. My question is once i get a few light coats on over the primer can i put a coat on heavier to get it to flow nice or will it craze again?