I had an old broken WAH kicking around so I thought I'd give it a go.   it works, not very well, but it works. I assume the pot value is wrong?   I was reading up on changing the value of the pot using resistors. would this work?   Would a 20k Bass WAH pot work better?   Am I flogging a dead horse? :)   Any advice / tips would be great.   got the idea fro here: http://www.strymon.net/strymon-tech-corner-2-build-your-own-expression-pedal/