RE: What mixture do you use to clean your plane ?
Covering glues shouldn't be vulnerable to alcohol's since Methanol is the largest component of most glow fuel mixes. Maybe some of the Chinese WrinkleKote junk on ARF's is vulnerable, but actual TopFlite Monocote isn't. I've used 99% pure Methanol straight out of a 5gal pail of the stuff when someone gives me a crash to repair and not had any issues even when flooding the surface pretty good with it.