Last winter I had some clutch probs and it p1ssed me off because the trails were perfect. Needless to say I ran the heck out of my sled and it would only turn around 8800rpms @ 90mph. I held it there too and that was all it would turn. I was told 800 twins have a rpm limiter at 8600. So if it is off a couple hundred revs I thought it may be wise to get it calibrated. Anyone send in your tach for a calibration? If so how accurate was it? Also, is there truth to having the rpm limiter?