Maybe someone has done this before......I play my 78 SF twin with the master volume all the way up and use only the channel volume to adjust. When running like this, when you pull the master volume knob the boost sound is awesome. Okay, my question, I would like to mount a 1/4" jack (or equivilant) in the back of the chassis and wire the pull/push switch portion of the master volume to the jack and operate it with a foot switch. Anyone ever done this? or is it possible ?