WTB: Parts for Wurliter 3800 / 556 amplifier

I'm trying to locate a few parts for my Wurlitzer 3800.

I need to connect the motorized volume control unit, which had been removed
from my Wurlitzer 3800 (amplifier model 556) . I don't yet have the manual
so I'll do my best to describe.

1. Looks like the critical piece missing is some sort of a small Link (or
sleeve) to connect the notched shaft on the cabinet mounted volume pot
(inside the amplifier) to the notched shaft on the motorized volume control
unit (which is mounted on a plate on the front of the amplifier).

2. I also need the 6 pin (5 wire) female connector (Molex?) from the
motorized volume control unit that plugs into the 6 pin (5 wire) male
connector (the latter being wired through the cabinet's plastic conduit to
the cabinet rear screw terminals).

While I'm at it, I also need the following:

3. Cash box door & frame assembly complete.

4. Volume control "key".

5. Service Manual.

Thanks,

Steve B.