Maybe another photo from the other side might help. I made that trigger free style with not drawings or notes. Just too many years ago to remember any of the details. It did have the same favorable pull characteristics in both my dad's Krag as well as my sporter.

With your photo I do see the gap to the "A" cam as greater on mine. Not sure if it is just moved or it is a combination of the "A" and "B" cam changes.