what causes this?

[ben]

Go ask at a auto paint suppliar You just cant paint acrilic over enamil the thiners just melts the enamil but im sure there is a undercoat you can get to spray over first then go your 2pack or acrilic over that or just spray the van with enamil like I did there are some good quality enamils out there now I just used ordanary house paint looks ok Cheers Reid

id have to agree with that. cheap as chips! and looks good enough for me?? just respray it every 3 or 4 years.. or after that time im told you can cut and polish it anyway..

ben