Hi y'all: Gotta quick Ampeg Bias problem. The amp is within spec with no load. .072 v on the power tubes and balances fine. I changed the bias sense resistors to 10 ohms. So it is all happy until you run your test signal through it and it the bias goes to hell with 1/2 the output tubes glowing read. I"ve tried fooling with the bias resistor values but it seemed to make it worse. I run out of room on the Balance pot (VR3) under load, to keep 1/2 the tubes from red plating. No melt down, but it wouldn't be be longer. Yes, I have Tube Amp Talk etc, and Groove Tube, Tube Amp book and read Ken Fischers notes. It doesn't seem to help. Swapping tubes from side to side doesn't help either. I've tried putting a 1000 ohm resistor in VR3 also but it didn't help either. The rest of the amp is in spec until this last step. Ideas anyone?