I just bought a frame and I noticed that it was missing the shifter cable tensioners. This is a small part that, but an important one, and I can't find them on the web. The frame is an alum 99 Allez with threaded cable braze-ons under the down tube which are supposed to have a plastic ended screw adjuster. I've looked at all the small parts sites and haven't seen anything like them except for some Ritcheys that are not threaded and go on the brifter. Any ideas?