I know there is an old time mod guy out there that can help with this. Aquired a old mod sled with a Polaris based Price performance motor in it, The clutch is a Comet 108 4 Pro. Anybody have/had 1 and what are your thoughts on it? I know nothing about Comet clutches, is this a keeper and rebuild it or should I just get a P85 with the right taper and do my best to figure the clutching?