Originally Posted by
Salamandrine
So if you completely slack the cable*, and back out the limit screw all the way, the RD still won't shift into the 12t? Ignore the brifters completely, shift by pulling the cable and letting it go.
* (let out like a half inch)
Correct. About the only time the chain drops all the way onto the 12 is if I'm manually shifting, ignoring the brifters, and letting it drop from midway up the cassette. Drop-clicking one at a time, it stalls out on the 13 cog.
I'm liking my diagnosis of the jockey wheel being too close to the small cog, but don't know how to widen that distance. I'm not sure the B-limit screw would alter it that much...