Originally Posted by
himespau
Yeah, I always put it on the top side of the little nubbin or whatever (the nubbin is between the cable and the bolt). The first time I tried it a long time ago, I thought the nubbin was to keep it from sliding out, so I'd put it between the nubbin and the bolt and then through the groove, but I've already learned that lesson. I've heard that sometimes putting it there allows one to use a mtb deraileur with road shifters (or the other way around), but I haven't tried that.
Choking up on the cable routing, shortens the lever arm and increases cage travel with the same cable movement. Since your problem sounded more like borderline or inadequate cage movement, I knew the cable was routed correctly, and posted more as general info for anyone else.