My projects are generally inspired by classic designs, but with a twist. I like to build things like basses on guitar bodies, non-standard scale lengths, and occasionally originals, and experiment with materials, finishes, and electronics. One of my great interests is driving the cost out of luthiery by sourcing parts and materials from the hardware store. I prefer to build more guitars than simply more-expensive guitars.
I went into the electronics, and reversed the leads on the volume control for a nicer 'sweep'. Then I started troubleshooting a problem with the passive tone control that turned out to be an interaction with the EXP circuit. Long story short, the EXP disables any tone control that is downstream from it. I moved the tone control upstream, and now it works fine. I have a separate review for the EXP tone control, I'm not all that impressed, but I'd say try it yourself, it's not expensive or difficult to install.