[Milsurplus] BC-342N Volume Control

[Mark K3MSB]

Greetings --

One evening after the local radio club meeting,  one of the members
says he something in his trunk that I may be interested in.  A nice
BC-342-N followed me home that evening.  The guys uncle had passed
away, and he used the 342 fairly regularly until his death.  Nice
condition inside and out (although I could do without the SO-239 below
the band change knob).   It works,  but needs restoration throughout.

The Volume knob is scratchy, so I thought I'd remove it and hit it
with some DeOxit.  Seemed simple enough.

I feel embarrassed to ask this, but how the devil do you get the knob
off?   The screw comes out nicely,  but the knob will not budge, and I
don't want to force it.   I tried putting a few drops of WD-40 in the
hole, but that didn't work.  With the screw loose, the knob (not the
shaft) will turn freely, so something's holding it in.

Second,  looking at the pots,  I don't really see a way to get any
DeOxit inside;  not any large openings near the lugs (which I guess
makes sense as it was intended to operate in harsh environments.  So,
suggestions on cleaning it?

Thanks

Mark K3MSB