Thanks, Barry. I almost missed those A/B pads! Guess I overlooked the comment about those in the instructions. Was about to wire the toggle across the board to the two D2 eyelets when I noticed the pads and saw where the traces were connecting. Handy!
I think the only thing I might change on the pedal is the gain, which is a bit higher than I like. I may change R5 to a 2K2 and decrease C4 to 470n to keep the bass rolloff knee at about the same frequency.