Hola. i have a Ksyrium elite wheel with a 105 10spd cassette installed and i have actual play in the cassette, meaning i can wiggle the individual cogs by hand with little effort, even with it pretty dang torqued down. i mean, it just seems loose. i think that i am missing the correct spacer, but do not know for sure. The cassette itself came with a plain spacer (no splines). but even with this spacer in place (behind the lagest cog) there is lots of actual play. Do i need to pick up a Mavic specific spacer? Thanks. Ashe.