Marantz 2245 Balance

HI all,

Here I sit, staring at a Marantz 2245...Without a balance pot.
OK. It has a balance pot, but it's not connected.
Don't bother to tell me how I screwed up, because I didn't make this mess.

I have a schematic, and if I have to work this out I will, but maybe somebody knows what goes where. Maybe a hand written note from long ago.

Appreciate the help!
 
but not a single word on how many wires I should be looking for or what goes where.
Schematics does not make sense?

marantz 2245_01.jpg