JW51 That chrome ring on the knob will get loose and rotate freely after the knob shrinks from years of drying. You can crazy glue it,kinda messy easy to take out to glue it !
The bakelite shrinks over time. You can dribble two or three drops of acetone on the back side of the stainless ring...let it run between the ring and the bakelite center, but don't use enough that it runs all over the place. The bakelite will swell a bit and then hold.
