Success

Last week, the Philco got powered up with the chassis still on the bench and it got a final cleaning of the tuning capacitor with a bit of alcohol and the bandswitch got a spritz of contact cleaner. After working the tuning cap the noise related to the tuning control movement is gone, there's still a little bit of noise in the bandswitch but it's too crowded in there to think of disassembling the switches.

The SW bands are off a bit calibration wise, it also can't tune to the highest frequency (22MHz) without breaking into oscillation. Of course now the SW bands are mostly dead anyway because of the sunspot cycle.

On the lookout for some 7B5's to replace the weakened ones.

Finally the chassis got put into the cabinet and everything got secured. Ran some test tones through the AM transmitter and all sounds well. I tried to record a video of the radio in operation, but the camera doesn't handle that type of recording well without overloading.