It's a bit strange that without the spacer you can't tighten the lockring sufficiently to remove all the play in the cogs. I have that exact cassette (and its Ultegra equivalent) Installed on a couple of ~20-year-old Shimano XTR M970 MTB hubs, and the lockring tightens down on the cassette fine without any spacer installed.
The spacer is included with the cassette in case you want to install it on an 11/12s road hub, which have freehubs that are 1.85mm longer. Nick Payne -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion visit https://groups.google.com/d/msgid/rbw-owners-bunch/1b5ec17d-9610-49d3-88e7-d514ffb38202n%40googlegroups.com.
