Need on-site help with Zenith round tube

[ShartZenith]

Fired up my Zenith round tube TV today for the first time. Got somewhat of a picture but don't know how to adjust it to make it bring in a real picture. Is there anyone in the greater Kansas City area or vicinity that's knowledgeable about vintage tube TV's that could help us with this? At this point we're beyond our level of knowledge. All caps and the high value resistors have been replaced. All tubes tested multiple times. Everything lubed and cleaned.
Thanks!
Steve