Looks like a different trigger on your SA. Which is that?
The OEM Trigger on my B-SA was one of the infamous Plastic Triggers
I cracked just below the Pin
This is the Trigger, CZUSA was replacing the Plastic ones with, back then
It's fully adjustable in both take-up and overtravel
Although, they set the Take-up and then peened the Screw in place, but not the overtravel (kinda odd)