Differences?

The pictured setup looks different than my C5ZF-D. The secondary actuator limiting pin on the primary shaft bracket rides higher on the secondary shaft bracket than it does on mine. I assume that both sets of butterflies are closed in this picture and that the choke is full open?

The second thing I notice is the adjustment screw (w/tension spring, mine doesn't have the spring) in the forground does not look like it is long enough to reach the choke fast idle cam like it does on mine.

Also, looking at mine, if that adjustment screw is riding up on the fast idle cam, the secondary limiting pin is held a little bit away from the the secondary shaft bracket, allowing any vacuum to open the secondary butterflies a bit. Once the screw falls away from (off) the fast idle cam, then the pin moves back in contact with secondary shaft bracket, holding the secondary butterflies closed.

Lastly, (pictured carb) if the secondary shaft bracket base/stop screw is set right (allowing secondary butterflies to fully close) and the primary butterflies are closed to the idle stop screw and the choke fast idle cam is completely out of the way, what could account for the gap between the metal secondary limiting pin and the secondary shaft bracket???

Does this all sound right?