[grandntl]

I resumed my search for the sensitivity cause and found that the on/off switch has three positions with two switches. One is the on off switch, the other identical to the on off switch, makes or breaks the connection between the cathodes of the 44 RF and 44 IF tubes being connected to the part no. 9 capacitor/resistor in between. The control toggles the two switches; far left is off for both, middle only turns on the power and far right activates the cathode connecting switch. This surely looks like a factory installation and all of my problems stemmed from only turning the switch one step. This must have been a "local.. distance" option. Thanks Terry and Ron for your help.
Bob