Ok, I have an 01 XP I purcahsed as a project (not running). I rebuilt from top to bottom. The ski has new hot rod crank, std bore, rebuilt carbs and new water regulator. The ski runs great but will not turn more than 6,000RPM's. I removed the Rave Caps and still wont turn more than 6,000RPM's. Does anyone have any ideas?

One thing to note Im using cut rave valve but I think that should only affect bottom end. IM running out of ideas and money. Thanks for any help.