[morzh]

I hope this is the last one....

I wrote before how when the chassis flexed the radio hummed.
I traced this to the 27 tube, when wiggle it, the hum would either disappear or come back.
I bent the panel's contacts, cleaned them, it seemed to stop.
Today it came back with a vengeance.

I soldered a wire and a lug to improve a questionable ground rivet on the tube's pin, no effect.
Then I wiggled the wires one by one and one of them did produce results; I thought it was bad connection....looked close.....the wire (factory sodering) had its end sticking out and touching the chassis.
The wire hapened to be one of the filament pins.
Cut the end, the hum disappeared.

....I was wondering why me gounding the Chassis rivet for the tube, the hum persisted. I guess 1 or 2 Ohms did not matter much.

I am gonna leave that Ground wire in place though