hey yall, I have a 2001 zx6r with a bolt on gp race muffler from pipe werx and a k&n air filter. Ive drilled out the screws for the fuel mixture and have them set to 3 turn out. ive balanced the carbs but it seems to be running a little rich. Was just wondering what anyone else has theirs set at? Also with the bolt on exhaust, what carb settings work best? is the factory pro carb kit a good idea? Thanks.