I made it yesterday!!! I used exact components except from icl7660s .. Instead of this i used 7660 acpaz chip! When its bypass i hear lot noise and when i engaged Pedal volume gets very low! I triple checked ground but its ok! I also used ivlark's offboard connection! Any sugestion would help :)
i know it's late, but i actually was just looking for this and noticed your problem. if you haven't figured it out, you might really want to use the 7660s. there are a bunch of effects that when you use the regular 7660 it causes a mess of issues, so you NEED to use the 7660s. if you don't have any they're pretty cheap on ebay, i think i have 100 of them just cause i use them a lot, and they cost me like $10 or $15 with free shipping from hong kong.