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OK so I checked the B+ voltage with the rectifier tube in (just the rectifier tube in) and I got around 320V DC and with the 2 71A output tubes in it dropped to 160V DC so I think the B+ voltage is working as it should, which I think the voltage will drop down to around the 90V DC ballpark range specified on the schematic once the tuner section is hooked back into the circuit (that will add the rest of the 5 tubes in the radio into the circuit).
So it seems like besides having to install the modern plate resistor into the circuit in place of the old fuse style one (by soldering it onto the connector leads under the chassis for the plate resistor socket above) I think this radio will be ready to go once I get the replacement speaker in.
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