mfreyhol said:
After assembly, the noise was still there and the cassette still wobbles. I'm assuming the hub is either shot or needs a complete overhaul at the very least.
Where can I have this done? Can a LBS do it? Or will they at least be able to ship it out to Mavic for repairs?
I had a kind of buzzing noise in my xl's rear hub at one time. I had to lube the hub as well as tighten it up using a mavic hub adjustment wrench. Tightening up the hub before putting the wheel on the bike should take care of the loose cassette feeling. Having said that though, you need to tighten up the hub after you put the wheel on the bike & tightened the QR to ensure its appropriately tightened.
You have to be careful to not over tighten the hub though--if you do, its supposed to stress the bearings and wear them out prematuraly. The Mavic hub tool is made of plastic, supposedly, to prevent one from over tightening the hub. Anyway, I tighten mine till its no longer easily turned and then back-off a quarter turn.
If you do take it to your LBS, you should search some of the older articles on the CrossMax wheelsets. When looking into my buzzing noise about 1 yr ago, I remember reading about some mtbr users who had to have something within the rear hub replaced. There was some advice regarding what to direct your LBS to do. If I remember correctly, the discussion centered around warrantee work -- in one case the wheelset was sent back to Mavic with the wheelset owner paying for postage, and it took forever; in the other case, the LBS just order some pieces for the hub and repaired it. In the 2nd case, the owner had to pay for the parts & labor, but it was not much more than the shipping for the first person, and the wheelset was ready to use much sooner. Anyway, its been a while since I read the posting, so you should search for it in case I have missed some details.