Andrew R Stewart 

I've installed, maybe, a dozen Travel Agents (both the adjusting barrel current version and the non adjuster first gen) on road and tandem bikes and if done well they work fine. A couple of details- The stretch of inner that runs in the face of the pulley between the two steps should point straight up, like the ad shows. Also where the inner has emerged from the transfer hole and onto the larger step's OD the inner tends to initially bump up, it hasn't yet become bent down/flat against the pulley step, and this bump up of inner can drag on the housing's underside. A gentle pressure on the inner to push the cable down flat is all that this takes to be a non issue. Andy