i tried adjusting Input trim - Doesn't help at all.
I didn't continue reading the thread so sorry if I'm doubling up on recommendations, but this is like saying rolling down the volume on your guitar can't get you a clean tone either... If you really and truly are still getting distortion regardless of the trim setting, I'd say it's gotta be time to change your batteries or make arrangements to have another guitar plugged into it... Should be impossible NOT to have a pristine clean tone with the trim set low enough