All of my guitars (Epi LP's, and an Explorer) are set up with two volume and two tone pots. Each guitar is different in how much volume bleeds through when switching on the three way with one volume off. My question is why. I would think if you have the volume off on one PU and full on the other that when the three way is on the PU that has the volume at 0 there should be no sound. But on two out of three I get a significant amount of bleed. Is there a way to fix this?