Thanks Rainman, only the left side is still available.  I found some used ones on ebay for $200 - $400.  A little more than I want to spend and that money would be better used elsewhere on the machine.  I was thinking about rethreading the shaft to the next size smaller metric left hand thread,  or because the top three threads are still good, I could use some washers to build up the area that is stripped and then use a nut on the remaining good threads.  I know it seems hokey, but trying to save a little money.  just a thought, but ill probably end up buying a used one.