On my stumpy FSR with a X0 rear mech a problem has occurred and I'm in head scratching mode.
Basically all the gears work and indexed OK. Big ring and all sprockets at the back run fine and so does middle ring and all sprockets.
When I run the granny ring I can use all the sprockets at the back cool. However, when I start going up any incline the rear mech kind of jump/kicks forward and sounds like a bucket of nails.
Any suggestions ???
PS New chain and cassette and middle ring installed yesterday. But did this problem before anyway.


