Sdkfz 223 question

I'm in the process of detailing Tamiya's 223 (1/35) and I had some questions about some of the interior detail.

The kit has that vertical tube (that it shares with the 222) in the center of the hull of the vehicle. If you look directly down through the turret it is offset towards the forward end of the vehicle. I have removed this to replace it with a more correct scratchbuilt mounting column.The interior photos (courtesy of AFV Interiors and other sources) show the machine gun mounted on a cone shaped column with the mounting bar for the mg doglegging upwards. There is a bicylce seat opposite this with what look like it may be a brass catching box suspended to the side.

Now the question. There is a suppot bar that can be seen that attaches to the turret ring. Are there one of these or two? Running to opposite sides from the center column to the turret ring? Attached are two photos of the turret. Anyone know of another good source for info on the 223?

Thanks, Mike