The tone knob rolls off the treble... not very musically, though, it sounds like an inexpensive tone knob. I play wide open in general, so not a real problem.
And no, I'm not getting the two confused!

As a matter of fact I just fixed an Ibanez (1984 pointy one) and its knobs went: middle detented blend/vol/tone, right in a line. Odd, but I kind of liked it!
Pkr2, that sounds like the kind of thing that it would be. I'll look for the break in the grounding. Cheers.