Took clutch cover off and found buttons missing and pulley grooved toward bottom, comet makes a complete high performance clutch, anyone have one? what are the performance gains i can expect? Any input is greatly apreciated.

welcome to the forum. i don't think your going to gain anything w/ the comet clutch depending on the bike you have unless you change the stock set up and even then its not going to be alot. just my

I would stay with the Polaris clutch, they will normally give you the best performance. You can add a clutch if more performance is needed/wanted. Also Comet has been out of business for a few years and getting harder to find parts and set ups for thier clutches.