I have a silverface princeton reverb, and I was thinking of putting the now defunct ground switch to use. It would be cool to have the NFB resistor be switchable, but is this possible without adding tons of noise? The ground switch is smack in the middle of the power section, so I can imagine that there might be a significant amount of noise picked up by the wires if I run them through that switch. One way I thought of to get around this is to switch the location of the ground switch with the power switch, to put it in a less noisy section. Would this work?