Here is some info I found on HCS for clutching your sled....hope it helps!
Here is a cheap clutch set -up using Comet and Cat parts. Primary clutch run Comet AC weights (58.3 grm's). Grind the tips (the very end furthest from the pivot hole) down to a weight of 57 grams, grinding at aprox. a 15 degree angle with more taken from the inside edge of the weight. Run the Comet yellow/green primary spring (you have to grind the OD on both ends to get it to fit or give it a twist when to install it) or use the cat yellow/green and a straight 53 degree Cat helix. I have a BM black secondary spring, but a Cat green spring is very close too, it has a little less twist than the BM spring. This is for a roller cover secondary. You can buy a '97 ZR440 roller cover assy. for about $75 list from any AC dealer. It is a direct replacement for the stock button cover. The ’98 roller secondary covers are a new design, so to use a ’98 and newer you need to use the complete secondary as the cover will not work alone. Run at 8300-8400 RPM, should be close to the middle hole. She hauls ass with this set up and it doesn't effect top end or back shift. For the deep snow you need to wind the secondary tighter so it runs a couple hundred more RPM and for drags back it off to 8100-8200 RPM. Springs are about $15 each, helix is $24 and the weights are about $35.
Ride, Ride, Ride, let it Ride!