Right, I followed the instructions to the letter but my X01 set up (with XX1 chainring) isn't running right.
It shifts beautifully both ways, finds the 10T cog and doesn't drop or jump (after quite a bit of gaffing with the B-tension bolt). But if I put a lot of pressure through the cranks in 10T cog it sounds as if the chain is rumbling - almost as if I've got the chain wrong on one of the derailleur cogs. It only does it in 10T and none of the others. If I wind the adjuster in or out it makes no difference as far as I can tell.
So could it be chain length? I've used the large-to-large + 4 as instructed but it feels a bit slack and the derailleur is full back in 10T (not touching the cassette but it couldn't cope with much more. Is this normal?
Once I've sorted this I'll move to sorting out the random creaks!
Grateful for any suggestions, constructive or comical.