Originally Posted by
big john
In the big ring the outer part of the derailleur is too close to the chain? If the cable isn't tight enough it won't matter how much you loosen the screw. The screw is to limit the movement of the derailleur, the shifter is supposed to put it in the right place. If the shifter cable is frayed the first thing you usually notice is the cable seems loose.
There's not slack in the cable.
The cage has always close to the chain, but today when I lubed the chain and then spun it in reverse it there was a noise like it was actually rubbing. Not sure why it may have moved.