In B24D cockpits, I've often seen what looks like an early "C1" autopilot to the right of the pilot's yoke support. The turn knob is a separate control. The gain/sense knobs appear to be arranged about the same as on later models. The toggle switches are arranged horizontalally, on an angled...
By the way Bill, does your sight have the backup sight mounted behind the optical sight? If it does, I was wondering if it could be rotated out of the way when not in use.
Bill, I'm doing research on the ball as well, for a 3D modelling project. You have better links than I have, but I did want to comment on the range dial. In photos I've seen, there is a cable between the range pedal and sight (of course for the reticule). I think the cable also causes the range...