hey im looking in2 trying this myself, and tamiya now sells bottles of their synt lacquer in big bottles, like their acryl thinners....
im hoping to acheive a paint with the same characterisitics as tamiya spray cans, only with enamels....
ipms4044: sounds like ur prob is too low air pressure, and the ab cant suck the paint thru...
not 100% sure, but i had the same prob, paint splattering, and it was coz i had the psi set too low....have u tried to thin the paint somemore???