So I just recently picked up my first wah pedal. I'd never played with one before, but I know how it's supposed to work. So I get this thing out of the box, plug in, and immediately I have some trouble. When I rock forward and switch the wah on, I can hear it, but in terms of getting that "wah" effect... no luck. Once it's switched on, I can only get a wah effect (occasionally) by pushing down really hard- but when I rock back and forth on it, I get nothing. I took a look at it, and it looks like the wheel/gear contraption under the pedal just isn't working right. Sorry if this is unclear, but I'd appreciate any help anyone can offer.