Originally Posted by
ThermionicScott
What "rub" are you getting? Rear tire with a chainstay, or tire and FD...?
Maybe 'rub' isn't the right descriptor for it. I believe the high and low positions are set up properly on the RD. It's the same I have it set up on my other two 10-speeds (another 5700 and 7900). From there it should be just a matter of setting the tension on the cable using the barrel adjuster(s). The problem I run into is that when there's enough tension to move the RD to the next low gear, there's too much tension (not enough slack) to shift up to the higher gear (smaller cog), and vice versa. It almost makes me think that there's too much friction in the cable, either at the turn under the BB or the housing leading to the RD.
Anyway, I did adjust the B-screw. No effect on the shifting.