I just purchased a sterling jp100d and love it. But, I watched a demo on YouTube and the guitar is supposed to be wired so that when the 3way switch is in the middle position, just the two inside coils are activated. Is this true? Mine is not wired that way. The wires for the inside coils are soldered together. I think I know how to wire it so that only the inside coils work in the middle position. Thanks for any help.