A while back I built Jack Orman's fuzz face variation (Yet Another Fuzz Face http://www.muzique.com/lab/yaff.htm) and it's an excellent pedal and among my favourites. but i have thought more about expanding the tonal range of the pedal. how would i go about biasing the transistors? i have a trim pot already, but im not sure where to place it:S i have a feeling its the base of Q1 but im not sure anyone know?