All my bolt on sheet metal I've sanded the epoxy primer to a pretty smooth finish before High build primer and paint. I have the body in epoxy now and am sanding it. Is it necessary to sand to this extent or is scuffing good enough? I know it leaves an orange peel look, but high build primer over it will get sanded to a smooth finish. Also, there are a couple areas of epoxy that I sanded down too far to bare metal. Should this be epoxy sprayed again or is the high build primer good enough.