I am faced with removing the old OEM striping off of a 1998 motor home. I have all my tools ready, MBX vinyl Zapper, heat gun and Vinyl off as well as other various removers. Zapper removed vinyl off of metal doors and cab just fine. When I went to use the zapper on rear aluminum panels the oxidized area above and below striping will take the paint right down to aluminum with one quick swipe. There fore I guess I'm faced with hand removal. Just curious if anyone has any secret recipes or techniques as this stuff is just ridiculous. Definitely the worst removal job to date. Vinyl Off seems to not be working to well.