Question for the home mechanics, has anyone ever had to put loctite on the derailleur B screw? Over the past couple weeks I notice a grinding when I shift into the largest cog, and each time it seems that my B screw has almost completely backed itself out. I've been riding for a while and only have ever touched the B screw when installing a new derailleur or cassette. Yet now it seems to keep coming loose. So I am wondering if it needs a bit of loctite or is this the symptom of a more nefarious issue.

>>150169766
Its not about the competition across time its about the oral history and tradition of the sport, in cycling more than all other sports the thread of myth, legend, and truth is woven continuously through past and present.

>>150168739
This is what big disc brake took from us.