Russ's site has to be on the bookmark for every Kiev owner even if only for understanding how the camera works if you're not interested in doing your own work on the camera.
Of course it could be only the so called dodgy quality control they say that plague the post 50s FSU gears. My J12 is from 89.
When putting it on both the lens and body must be set at infinity. The wheel should spin even when you rotate the lens by hand.