I need some help identifying the exact origin of this pedal as I am trying to do a volume mod and am still stuck with this volume difference when the pedal is on/off. I think it’s a version 4, but I’ve referenced pictures found on the Internet and there are slight differences like the input wire running into the foot switch is white vs the yellow wires I’ve seen in other pictures . if u have any help or suggestions as to the origin or how I could volume mod this effectively I would appreciate it!