I have a set of WR Compositi disc hubs. They were used by my friend for a while and now they need an overhaul. The problem is that I can't seem to find a manual for overhauling (replacing) bearings anywhere. I've bought replacment bearings, now I just need the instructions on how to change them. It would meen a lot to me if someone could help me. A PDF file, link to a website, written instructions, really anything would do just to help me fix those hubs. The hubs are very similar to the Tune Mig and Mag hubs so if you know how to replace those hubs' bearings you can write that also.