After trying all sorts of high-temp paints and watching them flake, crumble and peel off, I think I finally found a solution to keep the rust at bay. I was surfing the internet one day (thanks Al Gore), when I stumbled across a post by a gentleman who was having the same difficulties as me. His solution was to sand/wirebrush all the loose paint and rust off the affected area, wipe clean, then apply vegetable oil and build a fire. The idea is to "season" it like you would an iron skillet. I tried this and it seems to work well, at least so far. Plus, it turns black, like the paint! I figure if I keep treating it, it should never rust again... at least from the outside... Anyone try this?