I would deffinitly look into some clutch work and re-gearing, I played around with mine a bit and it made a huge improvement. No more low end bog, nice and snappy, EPI clutch springs, primary and secondary, it engages at 4500 and its got gears out of a trail RMK, It still goes 75-80 on the dreamo-meter, which is plenty top end for me, and its got that nice low end power that I like. When people see my sled they usually say "ah, thats just a bogger fan cooled sled" but wait till they ride it! its pretty impressive for what it is. My next mod for it is going to be an AAEN or DG pipe.