HAHA! Gotta be the heights thing.yes , yes .. continuity ... check / touch from one metal part to another ... your meter should read very close to what it does when you touch the meter tips together ... i set my meter on a very low ohms setting ..
sounds like something is Not making good contact , or touching something it shouldn't ..
your cap , with help from the tone knob , bleeds off treble freqs to ground ... at whatever the cap value is .
or ... your bass could be afraid of heights .. !??!