I am currently painting a cbm f-16 with model masters enamel paint. it is the navy aggresor paint scheme. I am having trouble with the paint not sticking. I fiberglassed it and then filled the weave with spackling then put on a 3 coats of water based acrylic primer which I sanded smooth between coats. I had the primer as smooth as a babys bottom when I started applying the color. I out one color ona and it went on fine. the second color after it started to dry looked a little rough. so after it was dry i touched it and the paint was almost like dust? im not sure if i thinned it too much or if my air brush is spraying funny. maybe i laid it on too thick? I made sure the surface was free of dust before i started so i know its not that? Anybody have any ideas?