My daughter bought me a Paasche airbrush for Christmas, so I've been playing around with it this past week. I decanted some Duplicolor Torch Red,[solid color, not a metallic], let it set to let the propellant "boil out", and sprayed a scrap body that I had primed with Duplicolor primer. I tried it setting the pressure at 20, then 25, then went to 30lbs, it came very dry and rough. Do I need to add thinner after decanting, if so what kind? Any tips would be greatly appreciated!