Hi everyone! This is my first post. I have recently completed this 4 track fuzz build and It is not working. It is not passing signal when engaged or bypassed. When I plug in both cables and plug in the power supply the LED lights up green and when I click the footswitch it turns red. When I disconnect the power supply and us a 9V battery the LED doesn’t light up. Where would you suggest to start with troubleshooting? I don’t have an audio probe. I have reflowed solder on all of the points besides the ones on the bottom of the board that are blocked by the pots. Any help is greatly appreciated. Thanks!!!