Hi All. Ive spent the summer getting my old 90 running sweet and decided to give her a lick of paint to tidy her up. Shes been painted black with a yard brush at some time! Ive spent 2 weeks with wet n dry - the existing paint is v soft and a bugger to smooth out - it sort of ballls up. Any way, disaster tonite - i wiped some of my finished work with a rag soaked in thinners and the black paint erupts!!! have i got to strip all the old paint off or is there some sort of "neutral" primer i can put on before spraying my 2 pack? help please!! thanks, steve