Has anyone used the ultimax XS822 or 823? My 2012 PC is not a belt burner like a lot were. I blew the original 083 at 600km I put on the 084 Kevlar belt and have 1000km on it. I used to use ultimax on my old rev and would like to try them again. I haven't got the new clutch yet but it will be buying one after the new yr.