I recently got a set of ksyrium elite wheels from a coworker and want to transfer my cassette over and start using them. I got the cassette off, cleaned it up, and after putting it on the new hub and started tightening down I noticed a lot of play. It appears the top cog (10th) doesn't sit down far enough to mate up with the one below it (9th).
I tried moving it to a third set of wheels with dura-ace hubs and it seated and tightened nicely with no play.
I'm thinking that I need to put a larger spacer beneath the 1st cog to move the full cassette higher up to mate with the 10th cog. Is this flawed logic? It makes sense but I don't want to get myself into a bad situation where I'm increasing wear.
My co-worker used to run a 9-speed cassette on the wheels and said a 10 should fit. Anyone have any advice?