To close the loop on this repair, I ended up removing Q4001 on the VHF/UHF amp board, I removed the 4 connecting pins, and then under jewelers glasses, touched up the 4 pads on the module. I think there was a short on pin 3, so someone may have been in there before me. After reinstalling, I had output! A quick tune up and the radio is now putting out 50W as specified.
Thank you to everyone who helped out with the repair, I am very grateful.
Max