[dporcaro]

Thanks for the comments Chas and morzh. Sounds like good advice. I did measure voltages at the tube pins. I didn't document the results but there didn't seem to be anything way off. I will measure them again and post the results. The tubes do light up particularly the 50Y6Gt and the 35L6GT they get quite warm. The 7C7 and 7A8 don't get very warm but a faint glow can be seen near the base.

I will go tomorrow and see if my local electronics store has an isolation transformer.