Thanks for the good comments guys. I noticed that my BK 467 tester needs calibration on the filament scale. When the tester reads 6.3V, the CRT is only getting like 5.7V under load. I didn't check the filament reading with no load.
So when I cooked it at "7V" it was really close to 6.3V and I still got into the green. I'm thinking now especially after everybody's comments, the CRT will provide good service.
Stay tuned for the restoration.
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