About the RB rotations, turning their stamina down from 90 to a minimum of 40/50 and working it up should yield better rotation and lowering the fatigue setting should help also because the higher that slider the slower they fatigue the down side to that though is it effects all the players so you might not want to go over board with that one.
So what I did was just work on the RBs and observe them first to see what effect it had on them then work the slider if needed in to get a good rotation happening.
I went from a 20 fatigue to a 15 at 10 min quarters which is what I play on so your results may vary so you'll have to find your medium with what you use FT-Mac so let me know what happens.
The Boss....Lead Man
Rickster101