I picked up a set of Mavic Cosmic Elites off eBay. They came with a campy freehub which I think is why the auction went so low. Anyway, I ordered a new Mavic Shimano 9/10spd Freehub and swapped it.
I put my Ultegra 10sp 12-25 cassette on, exactly as it was on the former Ultegra hub. On the Mavic freehub, with the lock ring very tight there is a minor amount of play, forward back (ie clockwise/counter-clockwise) on the cogs. I put the cassette back on the Ultegra hub and I don't get this.
There is a small washer/spacer that goes on first before the first cogs of the cassette. It almost seems as if I need 2 of these on the Mavic freehub vs only 1 on the Shimano Ultegra freehub.
Anyone have any ideas here? I'm thinking it's probably not a good idea to run this way.