Thanks for the excellent clarification on pot wiring, Trevor. Keeps me out of trouble. I am working on everything upside-down, with the knob towers stuck thru a piece of cardboard.
The Seymour Duncan diagram is for 1 P90/ 1 PHAT CAT/ 2 Volume/ 2 Tone. 3 Way Toggle. I am actually following the PBG diagram with my wiring.