I've bought two PCB's en populated both and they work fint and sounds fantastic, but both have a popping sound when engaged - They have a 2 meg resitor to ground at the input which normally should eliminate the pop sound, but here it does not, could anyone help locate the problem? If it's was only one pedal I would think it could be the stomp switch.
http://pedalparts.co.uk/docs/Klone-v3.pdf
Maybe send a message to Lee at Fuzzdogs Pedal Parts. He is a great guy. I've built quite a few of his kits (close to 30) and he does offer support and advice when needed. He will get you sorted.