Also, might want to check www.rusteco.com. They have a product that seems to be a good one step, paint safe, non-corrosive fix. There is a review of it at http://www.motorcyclecruiser.com/tech/Rust/. You can also send them your tank and they will do it for $145-$155. Anybody know anything else about these guys or their product? I ask because I too have a rusted tank to clean.