I wish I knew more about rejetting but I don't. :dog
I did find on factory's website there is a dyno tuner in Northglenn, CO. Is that near you? Either way you could still give them a call. They might give you some tips. The shop name is Metro Powersports and the number is 303 255-7050.
I have also contacted Factory about posting some of thier carb tuning guides on this site. But for now, go to
www.factorypro.com and click on Motorcycle tech. Then select high rpm motors and read the article. It tells you step by step how to adjust it properly.
DJ1298