’94 400L drive clutch issues

Hello all, new guy with a ’94 400L. I hope this is in a suitable sub-forum to post in. The issue is that my drive/ primary is starting to go. It has a nice metallic rattle at idle, and goes away once it starts to engage. I’ve looked it over and found the buttons are gone between the spider and the moveable sheave. Also, the weights are starting to wear into the sides too. My question is do I rebuild the clutch, or just get a used one from somewhere (ebay, etc.) rebuild kits and whole used clutches seem to be about the same price. Despite being an avid snowmobiler for the last 16 years, I haven’t had to do much with clutches aside from cleaning and such. I do have a source for a potential free good clutch off a cousins’s ’04 Trailboss 350 that he is scrapping. The clutches appear to be the same, but I haven’t confirmed yet. Should I go that route or? Thanks for any suggestions or help.