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I have put gears bakc on the M2 using a XTR 9 speed rear mech and suntour XC pro thumbshifters . the shift great but when on the last 5 sprockets the chain goes back dwon on its own . basically the thumbshifter just go down a gear , then 2 , then 3 etc....
I had to hold the thumbshifter all along the hill to stay on the same gear . I even broke my chain .
What shoud I do ?
I had to hold the thumbshifter all along the hill to stay on the same gear . I even broke my chain .
What shoud I do ?