Got an XT clutch mech that has been great, but all of a sudden the switch didn't do anything (it was really easy to turn between the on and off positions, and didn't affect the tension at all).
I took it apart and tightened up the tension screw thing as tight as it would go, and now there is resistance switching the clutch switch to the on position, but still there's no more tension in the mech than that of a normal mech.
It looks to me like the band that goes around the clutch isn't actually providing any friction, even when tightened by the cam thing. Had a look on the internet but can't find anything similar, it seems quite weird.
Mech still works perfectly as a normal mech, but it's just really annoying to have to go back to the noise of chain slap, so would really appreciate any ideas.