Thanks Zeno, I found the thread, here it is for anyone following along. Nice work by Doug indeed! I'm going to order a couple.
http://www.videokarma.org/showthread.php?t=261780
I'll still need to replace that burnt R44 1000 ohm resistor off the regulator tube. Is there anything special about it or can I just use any 1000 ohm resistor?
I recall seeing a youtube video by shango066 where he rebuilt a vertical integrator on some Zenith set. That didn't even cross my mind, so thanks for mentioning that as well.