Anyone know if it's possible to have a pedal altered to only engage when you hold the footswitch down, and disengage when it's released, like the hold feature on a boss dd3 delay? I want a pedal that will allow me to add one or two heavily distorted notes into my slap lines, similar to the way les claypool does in my name is mud, but dont wanna have to press a pedal twice for 1 note. I'd like to alter something like a Metal Zone pedal, and use the pedals thick distortion on a low slap on the B or E string in the middle of a riff, then release it to continue with the riff. any ideas??