I built the Muffler noise gate as specified in the build doc, but the signal noise does not seem to be affected by the circuit much, if at all. I have confirmed the transistors and IC are correct by name, as well as capacitors. I checked all resistor carefully when installing. What could be the problem? Here are some shots of the build: Muffler Noise Gate
. When the pedal is active, I seem to get the same level of guitar noise throughout the range of the potentiometer, which is the same as normal signal volume.