I also have a 610 a 1984. I have had it for just about 2 years now. After riding it the first season I declared it "My Favorite"! Last winter I sandblasted it and gave it a new coat of paint and clear coat. Built new wheels,700c, new Nitto bars and stem. Original canti brakes. I run 35mm tires covered over with Velo Orange Hammered fenders.
Last spring we found a 610 ,early 80's, for my wife. This one will be come a 650b bike.