I have a hub I bought used that I think probably should be overhauled. I have the instructions, they look a little tricky, but not too bad. The wire actually looks like it could be repaired without too much difficulty if you did manage to break it. One of the issues is that it is normally bent, and you have to straighten it to get the hub apart.
I was thinking about modifying my spare to work with the Schmidt dropouts so I don't have to get one of the schmidt hubs right away