So I bought a used a Dunlop 105Q Bass Wah a year ago. The one with the knobs at the bottom and the one where you have to click the heel of wah to actually turn it off. But anyways, aparently my wah has turned into something of a hybrid fuzz and wah pedal. Saying that, when I sweep from the starting position to half way, it is distorted in a vile and disgusting way, then the second half of the sweep its the lush wah I came to love. I have tested this at every variable Q setting and it applies to all. Half of the sweep is distorted, the other half is the actual wah. How do I fix this? Is it worth fixing? Where do i get the parts? I dusted it because originally the case was that the whole thing was distorted, but then I dusted it and now I have come to this. Getting the dust out with the cold can of air helped, but the thing is still useless. Help me!