I took out an old Dunlop Crybaby that I bought 10+ years ago and it seems to be, well, dead. I kicked it a few times, and shoved it a little, but it didn't help. I get the normal sound come through just fine, but then when I switch to the Wah mode, I get the same clean unaffected sound. Does anyone know what's going on? I haven't used it in a couple of years, by the way.