I have a EBMM Stingray 5 that I bought new but has spent much of its life under the bed in its case. I've been playing it a little lately and have a question about the three way switching. Please keep in mind that my bass has a piezo bridge. When I switch to the first (series) position, it sounds great but the volume drops considerably. When I go to the middle (single and dummy coil) the volume comes up considerably and the tone changes. When I move to the third (parallel) there is no change between it and the middle position. The blend knob between the magnetic and piezo pickup works fine, not that I use it often. Do I need to take this bass to my tech and see what's under the hood, or is this how the electronics are supposed to work and I'm just going to have to learn to live with it?