My appoligies I meant the brass scouring pads, I think they come in brass copper and other variants, anything to lightly rough the surface of the body for the paint to stick too.
http://www.google.co.uk/imgres?q=sco...:429,r:8,s:162
Something like that will do, I think scotch brite make various one available for about £1 at wilkos or asda.
Havent used tamiya for a while as I airbrush but it used to work fine, I think its more likely to be how thick your laying the stuff on. Smooth strokes and even coats
