I am having a bass built with a PJ pup config. The body is a Precision, so there are only two knob holes available in a standard pickguard if the third hole of the pickguard is used for the jack, which is my preference. Can one of the two pots be a stackpot, with the stackpot's volume knob controlling volume on one of the pups, and the stackpot's tone knob controlling tone for both pickups? This way, I'll able to use a standard Precision pickguard with its standard two knob configuration, with one of the knobs being the volume on one pup, and the stackpot controlling the volume of the other pup, and tone for both pups. Anyone know if this would work?