Hi all,
I have had the same XT crankset for about 3 years, and wasnt having any issues. At the weekend I changed the chain and cassette for new XT items, and since I cant get the gears to index properly.
I set it up perfectly from scratch and without load on the flat it is fine. However when its under load, the chain seems to catch, when I look down at the rear mech when its happening, every now and then it twitches the rear mech forward as if its grabbed something, but all the chain links are free. It seems to happen in either of the front rings that I use, and doesnt seem any better or worse in any cog on the rear cassette. Could it be the chainrings are worn, and the new chain is catching?
Any help appreciated!

