I am new to the forum and hoping someone can offer some advice. I have a complete Super Record Road groupset 4000/F from 1984, based on catalog info I've seen. It includes headset, BB (record), hubs (also record), FD, RD, crankset, shifters, seat post, brakes, levers, pedals (SL), toe clips. About what is this set worth and is it more valuable sold as a set or apart? Everything is used but in excellent shape.