Another timing curve question

We can copy this over to your carb thread.
As best I can tell, transfer slot exposure on the secondary side is typically none or minimal.
Since I was at the garage and brought the camara...
This is 4779-2 base plate.

4779-throttleplate_4612.JPG

4779-throttleplate_4613-r.jpg

4779-throttleplate_4614-r.jpg