The problem is not with the cable- it's not "broken" - but rather the ferrule on the housing, as others have mentioned. The cable housing is built with individual wires, and the ferrule is not stopping the ends from poking through the exit hole for the cable. Replace with a new ferrule, make sure the end of the housing is cut at 90 degrees (dremel/rotary tool and cutting wheel works great). Also make sure that the front housing section has been sized so as to allow the bars to swing all the way without straining the housing. You should also check the cable, as it may have become kinked. If you can't straighten it out so that it's fairly smooth again just replace it.