I use to have a dura ace cassette, i i usually lube my hubs the front and the rear hubs after 200 k, and these way they alwayz work like new, but last July 2000 i upgraded my wheels to a mavic cosmic elite, and i think i didn"t made a mistake in choosing these mavic wheels, well goin back to disassembling your rear hubs, you need a chain whip, a a shimano hyperglide locknut tool, and an adjustable wranch, and just follow what it says on the locknut ring and cone wrench size 17mm, and 15mm and a good grease, and you will be a happy camper, and happy riding to!!!