[R-390] Local & Line potentiometers

[Craig Heaton]

A quick comment or two so far. The length of the exposed shaft is 5/8 of an
inch, about 7/8 or so with the panel bushing included. Minor issue with the
terminology. I've been through the pots, no cracks, one end is grounded,
etc. Resistance wasn't quite up to snuff. Wires go to correct terminations,
no shorts, no grounds, etc. 

I'll add another symptom. Even with a speaker connected to the line
terminals, seems to me, way too much audio. With a speaker connected to
either audio circuit, knob at zero, at times the RF gain has to be decreased
to save the ears. IF gain is set correct, -7volts @ 150 micro-volts.
Transformer used to match impedance, speaker to receiver. 

With that said, what if I add a little R to the circuit. Am I correct in
seeing that R104 & R105 are in parallel? Could a person just add a resistor
where the wire from S104 (connection 4) and the wire from P120 meet? If my
memory is correct, this point is on the line gain pot and easy to access. 

Comments are welcome,

Tnx,
Craig