you could try ppg 330 spay it on or keep damp with a rag with 330 on it then use a wooden paint stick sand a edge on it like a putty knife. the ppg 440 is very hot but should not hurt the stock paint the 3m is very hot and may remove the paint the rubber wheel works good but you must run it slow on low air = low rpms just enough so it works any more air = faster rpms you will just burn them up fast. heat gun works to you have to watch it that you get it to hot it will just get gummy