Hi
I fitted a new chain and then realised my XT 9 speed cassette was worn too. tried to source one on Sat nite for Sunday AM ride but could only get a deore. no worries i thought.
whipped the worn XT one off and fitted the 9 speed deore. I found that the cassette did not sit as close to the wheel as the XT one did though and thus the lockring had nothing to lock onto - it could not reach the freewhell thread. I therefore had to drop off the second from smallest cog to allow the lockring to get any thread to lock onto. Is this normal - im now running an 8 speed block. Grrr!!