I've been having a number of problems with my sram rear XO1 derailleur lately and I can't seem to establish the source of the trouble.
The derailleur shifts fine from high to low but when shifting from low to high it pretty unresponsive. I can shift the lever from lowest to highest gear and the derailleur doesn't move unless I physically push it or it takes a knock on bumpy ground.
So far I've replaced the gear cable and chain, but this hasn't made any difference. I thought it could be the cable housing but the derailleur movement isn't jerky or sudden its pretty much non existent and now it can't even reach highest gear.
I'm starting to think something could be up with the actual derailleur. I've checked the alignment on the P screw and high and low limit screws as well as the derailleur hanger, they are all fine.
Any help would be much appreciated.