[quote="Dennisthe Menace" OK, now I'm totally confused...I had thought that the first 2 knobs were your master volume and tone controls. The third, I thought was a 'blend' knob between the 2 p'ups, before the p'up selector switch came into play......??? [/quote]
well, you may be right!
A little bit of knowledge can be a dangerous thing.
Here's one more bass observation. I notice that some of the early cloverleaf tuners have solid posts instead of slotted ones. See "Ventures Knock Me Out" and the sunburst side jack posted earlier.