Good work on grabbing the original photo.
OK, so let's check this. You have two blue wires running from the middle pot which are unterminated. The one running down in the photo is a shielded cable with a core and outer screen. The other I can't see the end of, but am I right that it's a plain wire with no screen, and runs to the body of the pot?
The next question is whether you have a basic electronic test meter that will test resistance/continuity? Not essential, but may help.