After my crash at the weekend, the cable around the securing screw on the rear mech looks a bit the worse for wear (as the mech, though it functioned ok for the 3 miles I had left to ride home). Probably ok, but I'm off to France at the end of the month with no vehicular back-up, and don't want to risk it breaking out in the sticks. Is it a sensible proposition to try and replace it without the faff of untaping bars to get at the outer?