CTC-4 Work Continued

Got frustrated a few months ago and set this aside for awhile. HO plates were going red while bench-testing the chassis even though drive voltage was within 5V of spec. Noted that a 440 ohm resistor was between pins 3 & 6 in some schematics, absent in others; I removed that and replaced with a jumper . That helped somewhat but the red, while reduced, was still noted.

Service notes call for the horiz freq lug on L117 to be adjusted until minimal current draw is obtained between the clips of the HV fuse. No more red although the lug is turned in almost all the way to the bottom of the coil. Seemed like a lot of turns were necessary to effect a small reduction. That normal? I opened the cathode of the HO tube and have a draw about 215 mA there. Running for about 10 minutes results in a slightly warm--but not hot--flyback with just a tad over 25KV measured. Sound like I can hook up the CRT now? All tubulars and electrolytics have been replaced.

One problems persists: when the cap is pulled from the HO tube (no HV), I can hear the program's audio. When it's replaced, I lose the audio although I still have the background hiss from the speaker. What's up with that?

Suggestions please!

Thanks,
Michael