Well just when I thought I'd got to grips with the basics of painting (Sand, clean, primer, paint, clear coat), something called Adhesion Promotors have reared their ugly heads and blew me out of the water. Can someone give a noob a few pointers please ? 1) What are they, how do they work ? 2) At what point do you apply them ? Before the primer ? 3) Can they be applied through an airbrush ? If so what do you use to clean the brush afterwards ? 4) Also on the subject of airbrushes, if you apply a primer through an airbrush, what can you clean it out with ? 5) Also, what's the best technique for painting rubbery parts such as Energon Unicrons Shoulders, Pincers, etc ? Thanks guys !