I have a horrendous noise coming from my rear XT hub.
Collective wisdom suggests the cups in the hub are pitted as I have less-than-round bearing and tiny metal flakes in the grease. One suggestion is to replace the cones with new ones from a new hub - is this easy to do and how specifically how do you do it?
Th e other option is new hub but that involves a full more-expensive wheel rebuild.
I think I might prefer option A but only if its doable. Any pointers?