I have a Spector ReBop4 with the TonePump and EMG HZ pups, and want to convert the Vol / Vol controls to Vol / Blend. There are a few diagrams on the Internet (including Spector's website). There are a few things that I'd like some comments about. 1) The blend controls are stacked audio-taper potentiometers. Is there a reason why this can't be replaced with a single linear-taper potentiometer? The pups would be wired to the ends and the wiper terminal would be the output to the other circuitry. Has this been tried? 2) Using a vol - vol control, when both are set to the max setting (0 resistance seen by the pups), the pups are in direct parallel connection with each other. This isn't a problem because they have enough internal resistance? 3) Stacked blend control wiring typically has a connection to ground. Like with vol - vol, this results in shorting the pup outputs to ground for no output. Like #2, this isn't a problem because they have enough internal resistance? 4) Vol - vol controls are wired on the input side of pre-amps (i.e. TonePump). Vol - blend controls are wired with the blend on the input and the vol on the output. Is there a reason why the signal chain isn't blend --> vol --> pre-amp input?