06/13- no prep needed to paint the tap cons... I am the painter for our company, be it with MPC or rattle can process is the same.... primer is not needed, doesn't matter how many coats...it will get damaged so use a cheep artist brush after and clean up the mar marks. if its going to be a color that stays on the truck, I give my installers a Rustoleum 2k can's. its both primer and top coat that likes to run like crazy but for screw heads, stab them though some cardboard, spray and let air dry (20-40 mins depending on sun/heat) MPC is a different animal repainting (Foam is good for the first 3 to 4 dips then the foam gets broken down.)
-Rc