[glyphmon]

Rod,

Thanks for the information.  You confirmed what I was beginning to think by looking at the schematic, that the tone control and volume switch, while part of the same assembly are electrically two separate components.

I may not have explained correctly - the blue wire in question runs from the terminal strip, around the front of the chassis and then, near the power/tone control, is spliced and taped, becoming a short section of white wire which then goes to a bolt on the chassis which is one of the four mounting bolts for the power transformer.  

Would there be any harm in trying to put the tone control back to the way it should have been from the factory?  Am I correct in thinking that the blue wire from the terminal strip as described above, and the disconnected wire coming off of what on the schematic is Cap 57 but in this Run 2 set is the 8318-SU bakelite, were both supposed to connect to lugs on the tone control?  Which lugs would go to which?

Just placed an order for capacitors and resistors a few minutes ago so in a few days I hope to begin actually swapping out parts.

Best wishes,
Roy