Help: Morley Slimline Distortion Wah

[Strange]

I purchased a Morley Slimline Distortion Wah and opened it up to find it had only one battery clip and the pedal runs off of 18V. That's not a problem - I can fix that easily.

I think the pots are pretty rough as well and they could probbaly be swapped. However, the pots are 'D' tapers - which I believe are 'Digital' taper - can I simply use Audio tapers here? Would anyone have a recomendation for a possible change to these pot values?

The two stomp switches seem to be on their last legs and are functioning poorly. I am going to swap them out for 3DPT switches but I am not 100% sure what the best way to wire this up would be. I am looking at the schematic and how the pedal is wired but I seem to be confusing myself - perhaps the pedal was rewired - perhaps I am just burnt - but I am having a hard time figuring out how I should be wiring this up properly.

Here are a few photos with the current wiring - for some reason Photobucket will not reproduce the schematic. Any help would be appreicated.