My main question pertains to installing an open belt primo primary drive. One of my brothers hooked me up with the setup and we installed it a year or so ago. I ran the bike less than 100 miles (worked fine) then I tore it down for some tlc last fall. I didn't get back to it till recently and can't remember (didn't take pics) if there was some type of spacer between the clutch hub and tranny shaft support. Brother died so can't ask him. When installed I have close to 3/4 inch between the hub and support. Can anyone confirm that's ok? Thanks