Originally Posted by southpawboston

For Neal to pose a mechanical inquiry indicates a serious problem given his Mad Mechanix Skilz.

I don't think the resistance caused by either rub scenario is significant enough to worry about. I would be more concerned about the annoying rubbing noise and eventual wear on the cage (or crank arm).

As Rudi suggested, an FD with flatter cage will solve the problem (and there are plenty of flat-cage FDs out there to choose from), but so might using a slightly longer BB spindle.

You could also file away that lip on the front of the cage, but then it might start rusting.