Campy Rear Cogset issue
 

Hi there-
I have a 12-25 Campy rear cassette w/Campy Chorus rear der (not the carbon one). Recently it seems that when I am in the 39/25, the top pulley cage is rubbing against the teeth of the cogset. This has never happened before, and I'm wondering why it is now. Any thoughts? Any way to remedy this? It makes an awful crunching noise...

Thanks
BRI

Sounds like a b-screw adjustment is in order....

Go to http://www.parktool.com/repair_help/FAQrindx.shtml

and ctrl-f for "b-screw"

Awesome!!!! You rock!!! This is the problem...kick arse! Thanks so much..