I have an 01 banshee i have a k&n filter with no air box, t-5 pipes, and I have rejetted it with 280's. its seems like i should have a lil more bottom end through all the gears but the worst is sixth I can have it pinned in fifth and as soon as I hit sithc it falls on its face. thinkin about putting some 270's in but not sure where to start. I am running amzoil at 80:1 any help would b great!