You can get a service kit with clutch wgt. bushings, pin's and shims from you dealer or online via the parts fiche at Browns (prices CA$). http://www.brownsleisureworld.com/Where can i find a good rebuild kit online? And what would be a good price for a primary clutch rebuild kit?[/b]
Spider rebuilds parts are no longer available. AC will sell you a new spider but at it's cost you may as well buy a complete NEW clutch on eBay.
Someone stateside may past the US fiche link.