Never took the time to figure it out, honestly. I used to be horrible about slathering epoxy everywhere once I knew a build worked, which made tinkering with them after the fact a pain, and if swapping out the switch didn't work I just made a new one altogether (think I found 12 old gutted ones when I cleaned up to move a few months ago). Now that I've actually thought about it, it probably just had to do with sloppy soldering/craftsmanship. It took a good long while for some of the most basic do's & don'ts I learned in that electronics class 15 years ago to come back to me. Heh. Seeing these, though, I may have to rebuild one of those carcasses sitting out in the mod box and make a proper one now that my builds are actually lasting until I get bored with them.