cny you give good advice but I think you have an unfortunate typo here. "rub" not "run?"
Originally Posted by
cny-bikeman
It really should not run in those combos, as they are the very ones that one uses to make the front derailleur adjustments. Please make sure brakes are properly adjusted and that everything is properly tightened.
Also I wish this site had a mechanism by which we could rate the quality of posters' advice, so the less experienced would have a basis for deciding whose advice to follow. Although in this thread it seems pretty obvious.