Thanks for the suggestions, DD and Tom; I got into the input circuitry; Tom you
were right on -- found the grids 'floating' through some bypass caps; RF was
being fed through 10ohm resistors to the filament leads (probaby not to bad);
the filament 'bus' grounded through 1 ohm/ 25pf series network... removing all
of these extra parts and bringing it back to the schematic yields
evenly-heating tubes on keydown, and 1300 watts output with 80w drive.
Brian N9ADG
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