Hey Big Mike, Not sure what product your using or how, But we have been detailing RV's for sometime, so I'll give you what works for us. We have used a mild rubbing compound with a lite cutting pad to take out holograms, oxidation and some scratch's using a DA buffer. If its on the worse side, I would recommend using a heavy cut compound with a yellow foam pad or wool pad. It's always better if you try the lightest cutting product first, and move up from there. We are going to try the McKee's compound all in one product next week at 80 bucks a gallon. If you want, I'll take some pictures before and after and send you to make a decision. If your ever in the mountains of E TN, Hit me up, we're probable in the area at a resort detailing.