Do any of you guys happen to know the minimum usable thickness for the plain steel clutch plate in the GL1100 clutch, item #6 on the Honda fiche, also known as, part #22321-371-010, there are 6 of them, I've been told the service limit is 0.3mm but that sounds very thin to me, my manual with all this useful information burned away with my last hard drive, thank you.