Rewireing motors and foot controllers is fairly easy. Some motors are a bit of pain but they are all usually rewireable. I've yet to find an old foot controller I couldn't rewire. Adjusting them can be a pain though.
There is supposed to be a tutorial on Yahoo about adjusting them but I can't find it. It seems to be a secret or something because those that tell me it's there won't give me the URL. Oh well.
Joe