So a friend brings over his neighbors amp over. Recently 1 of the tubes blew and he replaced only the one. I have replaced all the diodes on doubler circuit. Has a new cap bank. Replaced the resistor for metering, B- floats. Installed a 50k resistor for bias shutoff. It only goes to ground when keyed. Anyways after doing all this and checking. Tube on right side starts to glow pretty quick. Switch to plate current, I meter is in the far right corner. Its pegged actually. I need to check a few caps yet. The 3 pins on the tube sockets are directly grounded as they are measuring grid and plate current thru CT of transformer. Anyone run into this problem before? This has a built in driver. Needs a small radio with very little drive. To be honest I don't like this amp. Very cheaply put together.