I'm using this set-up: FX out > pedal board > volume pedal > FX return. The idea is to use the volume pedal as a variable dry/wet control. (btw, the FX out/in needs to be in parallel for this to work... some amps don't have that). Anyway the volume pedal I'm using is a Boss FV50H. The problem I'm having is the pedal only mixes in the FX at the top of the throw. I tried moving the pedal before the board, but that didn't work as the FX came through all the time, even at the bottom of the throw. So the question I have is, since the pedal is 'Hi impedance' (FV50H as opposed to FV50L) is that the problem, or is the potentiometer in the Boss pedal non-linear? Is there a pedal that has a linear pot? Any help is appreciated. Thanks.