1950 Admiral 16" Set; Recapped... No Picture!!

[Magnavox300]

Found a 1950 Admiral Set at my local dump the other day...It came in a nice cabinet, knobs and trim are all good!
It was sitting in front of the large dumpster and I just couldn't let it get crushed!
Brought it home, took out the chassis and CRT, easily came out in one piece, nice and convenient to work on!
CRT tested strong, so I thought I would proceed...
Recapped, and replaced bad resistors, but I am not getting the CRT to light up at all.
Tubes are all correct, good and strong, and I replaced what was needed.
The only thing is the 6BQ6 tube next to the HV cage was dead, and I didn't have a large coke bottle type to replace it with, but did have a smaller one... it's a little short, which I'm not sure is working properly... I had to use alligator clips to make up the height.
But it's still a 6BQ6, don't know if the size would make any difference.
Moved around the ion trap, no difference.

Is there a way to test for HV with a multimeter? I have a feeling
it's not getting the proper voltage.
Rechecked all my recap values and joints 3 times, everything looks good.
I believe there is a doorknob cap under the 1B3 tube?
Not sure how to check it, or if they ever go bad...
I appreciate any suggestions to help get this baby going again,
I'm sure I am close!!!!