Jockey Wheels Riding on Cassette
I'm new to the Bike Forums, and I have a question that may be obvious to someone a bit more experienced than myself with how rear derailers work.
For some time I've had a problem with the top jockey wheel riding or hitting my highest gear. It sounds and feels like a subtle grinding. What is going on? I have adjusted the set screw that is supposed to push the damn thing away from the cassette, but it is not doing the trick any more. So, short of replacing the set screw, shouldn't there be something else I can adjust?
I just replaced my casette too, for a different reason. But now it seems to bump or hit even worse.
I'm riding with a Shimano 400CX derailer (is that a piece of crap? I don't know) and a new SRAM PG-850 12-26.
My inclination is to replace the derailer. But something tells me that is not right. HELP!