[Eliot Ness]

Here is a link to the schematic for anyone else following this thread:

http://www.nostalgiaair.org/pagesbymodel...013208.pdf

I'll let one of the resident experts chime in, but until then you might want to check some tube voltages.  You can also check the output transformer ( #38 ) for 400 ohms.

I doubt that one resistor is the problem, but if one of them is out-of-spec that much then there are probably more that need to be changed.