I'm looking for a small part that I even have trouble describing at bike shops. 1964 Schwinn Continental had the shifters on the downtube, and the cable leaves the shifter through a small part I can only describe as a nipple. In the first photo it shows my shifters and you can see the part in place on the left and how it's missing on the right. In the second pic it shows the part. When the shifters went up to the stem it all changed. Anyone have one of these little thingies? It's the only part I'm missing on this bike.