I need to use a DD-20 setting with a very short delay time, maximum feedback and 100% wet. The problem is that when I turn it off, it continues forever because of seamless switching (I presume). I can make it stop by changing various knob settings but that's not very practical. Does anyone have any ideas for solving this? I thought about connecting to the B output and switching between A & B to get dry/wet but then if I want to switch back to wet later in the song (I do) the old wet signal will still be there. Any clues?