9 to 10 speed compatibility.
I have an XTR RD M960 9 speed long cage rear derailleur and I'm building up a Surly LHT. I would like to run a 10 speed triple set up. I have some 10 speed 105 shifters and a 10 speed 105 front mech. Will the 9 speed XTR work if I buy a 10 speed cassette ?