Just completed relocating the power cord as per attached pixs. Cut the unused wires on the PT off shorter and re-installed a wire nut cap on each one. Also rearranged the OT wires to be perpendicular to the heater and screen wires. It's hard to tell in pixs but I have 1/8" to 1/4" clearance between the wires.
The disappointment is I plugged the amp to the speaker without any tubes in it and turned it on---it's still has that hum as before. Moving the power cord had no effect. I have the PT grounded on the OT bolt---could that be it? I've got the filter caps, PT, can cap, power tubes all grounded on the OT bolt---but the way I read it that in accordance with the Phoenix schematic!
Got to be an answer for correcting that hum where it would be dead silent without any tubes or with the tubes in and on standby. Platefire