[462ron]

Hi RedRobot, don’t worry about the 60 volts you have on your chassis. If you look at your schematic you see two equal value safety capacitors in series across your power input with the common connection connected to chassis. That common connection is at the center of those caps which puts it at half..60v.. of your input voltage which is usually 120v thus the reason your chassis measures 60v to ground such as a water pipe. Those  capacitors AC resistance, actually impedance at 60Hz is large enough to limit dangerous current from affecting you when touching the chassis but your meter will measure voltage there. You will probably measure that same 60v regardless of which way you plug the radio in.

Ron