The schematic is in the Service > Schematics > Guitar Schematics section:
http://rickenbacker.com/pdfs/19557.pdfThis is the correct drawing. The difference between a schematic and a visual drawing is that you are expected to know how to extrapolate for slight differences.
The Ric-O-Sound bridging over to the Mono is right on.
It doesn't matter which pot is used for the switch, so long as the .0047 capacitor is switch bridged properly, which it is.
Potentiometer values may vary. That doesn't matter, either, so long as the wiring is correct, which it is. If you like a lot of top end or grind on your bass, be glad you have a 500 Kohm pot for the tone pot, which will decrease loading very slightly and give you the slightest touch more top end.