Just did the re-jet for my '06-S. - had to remove the exhaust to be able to rotate the carb enough - had to easy out (2) float bowl screws - lost the little o-ring at the top of the carb (substituted an o-ring from Lowes) - didn't plug the vaccum hose in and pulled my hair out for 15 minutes (erratic running) All that took 2.5 hours. - Opened up the top of the air box to 3.25 x 4.25 - cut out pipe restrictor - JD jet kit (160/25/red neddle on 4th clip) The thing is, I now have a louder decel pop, and a irregular hanging idle. - I will check the throttle cable angle tube, but I think it's the Lowe's o-ring that is doing it: it was just slightly to large in diameter to fit in the recess. There is an audible pppffftt-ppppfftt in time with the motor, but I can't tell where it is coming from and am assuming it is the oring. The bike is obvioulsy faster, and has better throttle response, and has a much louder intake honk. Cool!