I'm stuck on figuring out what could be going on with this McCoy Wah build. I used a Vox wah housing and added an old style board and parts. I think I have it wired correctly from comparing to photos online. I added a 9V adapter but think it's correct as far as wiring. It will pass sound both off and on, but it's VERY quiet and no wah effect. Does anybody see any glaring issues in these pictures?