I'm working on a Jazzmaster that's a JM kinda in name only--it has a neck lipstick, middle lipstick, and a bridge minihumbucker. Furthermore, it has a 3-way pickup switch, and 3 knobs currently. (No wheels or additional switches.) I'm trying to wire it up so that the neck and bridge pickups operate "normally" w/ the 3-way switch and a master volume and a master tone knob. Then the middle pickup would operate on a 3rd blender knob? I THINK this is doable? For some reason wrapping my head around the 3-way switch AND the blender knob is proving impossible for me. Any diagrams I can reference that you know of? Thanks in advance!