Hi, I just made a Mag echo from the geerber you shared. Recently, I found it noisy and hissing when turning the potentiometers. And on the circuit, there is a missing 10uf capacitor to make the LFO led light up. Then I looked for the project on pcb way but it was gone, it must have been deleted. I hope you can help me with my noise and hissing. Sincerely thank you.