[SteveJB]

See if this is what you need. I tried a PM, but I cant tell if it is going trouugh so I am reposting here.

This is what I measured (all from chassis ground):
from the plate of the 6J5 driver it is 256 vdc
From the positive side of e-cap 70B it is 256 vdc.
 
Then I had my chassis upside down in a cradle with the transformer on the bottom. Looking at the 6 pins, there are three vertically on the left side and 3 vertically on the right side.
I get the following starting top left, then middle, then bottom left:
-21 vdc
-21 vdc
-21 vdc
 
On the right side, I get top, middle and bottom:
-21 vdc
256 vdc
256 vdc
 
My set read about 20-30 volts low on all the tubes, but it plays well.  I don't know old the same holds true here.
 
Here is a picture from the bottom as I described it above (the trans is between the bakelite bock and the 6J5 Driver tube socket:
http://i1033.photobucket.com/albums/a414...uhj9nw.jpg