ive got a k4 gsxr6 and recently put 2500 miles on it. ive only had this bike since feb. i was riding yesterday after having her put up for a couple days and she seemed a little bit sluggish. ive been riding the dog shit outta her and layed her down once. but even with my aggressive riding there should be no excuse why my power doesnt seem as strong. throttle response is better for riding a longer wheelie now but at higher end and on gaining speed it doesnt have the "umph" that it did. any ideas what might be up????