I filled in "split", and there is MORE treble that way, but the highs knob still does nothing to change the tone... Which is weird, right? Also, I found out a strange little "bug" - if I hit the low B, it occasionally makes a short glitch noise. I had thought this was a problem with a bass at first, because I only heard it on the bass with questionable wiring, but now I've heard it with another bass too, so it's got to be the pedal. Anyway, looks like I need to have somebody dig around in this thing for me and solve some stuff.
Related question - where did you find the build docs and info? The OSHpark website no longer has them, and I can't find them anywhere else.
Hmmm, yeah, that doesn't seem to be 100% they way it should ......
I might have to open up mine and check again. I installed a dip switch into the SPLIT spot, just because ... you know, options!
Build docs and everything are at Godcity now. There's also a FB group where you might get more educated answers (I don't do FB, so no idea what's going on there).