I recently obtained one of these and am having some problems with it. The wah seems to work just a tiny bit, I can't really notice a change in tone - just the volume goes down by like half or 3/4's. And the fuzz switch itself will not activate anything at all.
http://www.youtube.com/watch?v=PFNWblx6QfoThats a video that shows the pedal, pretty much the exact same thing but Kent instead of Mayfair - I suggest not listening to the rest of it as he is a poor player xD
If you know anything about fixing these up let me know please; really want to give this thing a try