I have the same gun and I had no problem shooting Acrylic Enamel with it at the recomended 21PSI at the gun. These guns are budget, but the craftsmanship on mine seems to be very good. I think your problem is in the paint mixture, air pressure, and gun adjustment. It does not take much paint to shoot test patterns, so I would suggest mixing some paint up and just keep adjusting until you get a good pattern. You'll get it, just keep trying.