I imagine that you'd probably use pots valued at 250K or less, and would have to crank the $H!T out of the trim pot on the blaster in order to make it work. You'd might as well do away with the bypass switch on the blaster, because with the circuit cut, I can't imagine that you'd be passing much signal. That's my hypothesis, but hopefully Bill can chime in because his shop nite guitar has a similar setup.