just bring a larger main or 2 with you next time out. take the lid off. warm it up and lit her rip. if its lean bump the main up. less restrictive amounts of incoming air will lean it out. but i dont know how much. i ran a bike with a k&n filter on it and was jetted for it. i went to a foam oiled filter and it was pig freaking rich. put the k&n back on and it was fine. but this was with alky.