Brent, I can't help with the Simplex cable-clip, but I am curious: what's the clamp on the top right? It looks like a cable guide but the diameter of the clamp is too small for a main tube. Does it fit on a chain stay? Plus it's got that small hole at the top, perpendicular to the what I assume is the channel for the cable. I can't quite figure out its purpose. Care to enlighten me?