So I have been absolutely in love with my russian big muff since I was in High School and it has been an integral part of my sound. Today though I turned it on and noticed I wasn’t getting nearly as much distortion and the pedal was signifcantly louder.

Here is a crappy video I made if its any help.
https://drive.google.com/file/d/0B9F0z2On7orWNkg0ZVUzdUhLV1k/view?usp=sharing

This is far and away my favorite piece of gear and means more to me then some of my actual guitars so I would much rather fix it then replace it.