I would say either you have too much pressure, you're paint isn't thin enough, you're moving too fast, or a combination of all. When I use a siphon type gun, which I now only use for primer, I run it about 40psi at the gun. I use a gravity feed HVLP gun for topcoating. I like the fact that I can actualy use all the material in the gun and not leave that little bit in the bottom of the cup.
When I started painting I used acrylic enamel all the time, because it's a single stage, and it was about the cheapest way to go. I like to use base/clear as much as I can, but I'm using ac.enam. on my '48.
