06-16-2014, 05:36 PM
One more possibility... Unless it's too late. Inside the tube socket cover there is usually a resistor. They OPEN UP, and the tuning eye just sits there. I don't remember the pin numbers, but it's there. It cost less than running another wire up from the chassis. I seem to remeber that the resistor sent amplified AGC voltage to the deflection plate in the tube.