[Perry]

I have recently acquired a Philco 610B. One of the knobs refuses to come off. It is the center knob on the tunning control. The outter knob seems to move along the shaft a little bit, but the center knob is stuck fast (and, of course, it must come off first).

Natually, I would like to preserve the orginial knobs if at all possible. Do you have ideas on removing stuck knobs without damaging them?

Thank you,
Perry