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60 volts p-p on the 6BG6 grid is probably correct. The grid should be -7 to -10 volts dc measured from the cathode. I would take the 500 pf doorknob out and see if your HV comes up to 9KV or more. I thought the one in my old Philco was OK because it measured not shorted with a digital ohm meter, but it was shorting out when the voltage built up to -- 5KV! Also check the 0.05 from the screen to the cathode. It could be partially shorting and knocking the screen voltage way down. If the H osc. is slow to start try another 6SN7.
Best Luck
Cliff
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