Quote Originally Posted by OakLeaf View Post
Technically middle chainring/big rear cog is cross-chaining, even though I do it too. Does your front shifter let you trim? My Shimano R700 shifters do ... big push is a shift, little push is a trim. If I'm using the whole cassette in the middle chainring which I really shouldn't do, I need to trim at each end.

Did it not use to rub there and now it does? Is your FD clamp-on? It's possible for it to rotate on the frame. Mine did. Twice. Even though everyone swears that's impossible and if the clamp was loose it would slip down, not rotate. Mine did. Actually the symptom I was having was that it wouldn't go into the small ring, but I would expect rubbing could happen, too.

Limit screws aren't going to affect anything w/r/t the middle ring. Set those where they should be for your big and small rings, and do everything else with the cable adjustment.
Ah, that makes sense. I usually use one or two gears above for flat ground, but because of my muscle injury, I've had to move to lower gears. I haven't really noticed it rubbing, but that's because I haven't really used the gear. No idea if it'll let me trim. They're the low end shifters (2200). (There was a bit of cable adjustment to adjust the throw--now I can shift into the big ring!--so that may have played a role too.
I don't know what I'm doing well enough to play with cables, so I'll let the LBS take care of that.