i got out for my first ride of the season, i got to test out all the stuff i did to the sled over summer,my temp gauges work flawlessly, changed over to carbides from hardbars, holy-cow i have steering!!!, also my carb rebiuld is great, easy starting, much better throttle response, but im still not pleased with my top speed it seems a bit low,? and i cant figure it out either, its a 87 440 f/c jag, now im getting plenty of rpm, factory manual says 6200 tops, but with my jetting and uni-pod im gettting like 6700,i should say it is the correct belt, track tension is correct and the hex clutch bushings are tight, no play, also i should mention that ive checked the belt and in a no -load situition, track raised the belt rides all the way up the sheaves at full throttle, and registers 90+ on the spedo, but under load conditions on the snow i can only muster a mere 50 mph at full throttle, now i realize this is no thundercat but i expect more than this,only thing i can figure is that my clutch or secondary springs are weak? or something?,everything preforms well except the top speed issue, any ideas guys? im stumped.