Originally Posted by donrhummy

The adjustment of the rear/front derailers can ONLY be done by pushing the BRAKE handle inward one click. The shifter located right behind the brake handle does not have this capability. So if it's rubbing against the LEFT side of the front derailer, tough luck - there's nothing you can do. (Also, my ultegra rear derailer can adjust with one click, but not sure if 105's or tiagra/sora can)

NOTE: This refers to Shimano only.