hey just thought id add a question of my own here, iv heard tube amps clip asymmetrically, in a standard overdrive/ distortion stompbox you can add an extra diode to make it clip asymmetrically, im curious to which way around this should be placed. in other word the extra diode would be placed in series with that of one of the existing diodes if i were using something like this would i place it in series with the top or bottom diode?