I believe I read on another thread he has pipes and maybe a k&n and as of right now is running pretty lean. If this is the case you need to up your jetting soon or you will probably blow your shit up. You can try leaving the 25 pilots in it for now and adjusting the screw and if that doesn't work bump up to 27.5, there are actually a crap load of posts covering this. If you think you are capable of removing the carbs and then eight bolts total on the bowls, then go for it.