Congrats Bill...that WO-65 is just MINT!! Good luck on the restoration!
The "dropped ring" syndrome is no big deal. Glenn's WO-65 has the same problem that I haven't addressed yet, and the ring on my WO-65-2 was getting a little "loose". I just put a thin layer of blue RTV silicone between the ring and circulator column, waited 24 hours before the next wash, and problem solved!!