[CharcBait]

I've found a schematic for my 50T, thanks to your help. Along the way I found one the '42 "Tropic" model, nicely annotated with voltage readings here and there. It had the same tubes except instead of a single 41 output tube it had a matched pair, otherwise it's almost identical to the proper schematic I now have. Those voltage readings might still be valid for my model, except at the output stage. I'm feeling a lot more secure about this project now that I have a schematic. Thanks again. .....c