I see you are not getting any replies so I will try. I was hoping an expert would answer. That I am not.
Describing motion in text can be challenging to both write and understand. I'll do my best.
In the first of the two pictures below the red arrow points to the "dog leg: part.
Below that in the pic and to the right are all the parts that fit in the slot in picture two and or go in the hole in the back of the FP left side in pic two. You can see the cross pin holes clearly but not the 0.200" hole in the back side that intersects with the slot.
Inventory of parts are:
two cross pins
one dogleg
one tiny spring
one thing-a-ma-jig
black cylinder with cutouts - now know as the cylinder.
With the rifle cocked and ready, ...to fire the hammer strikes the back of the cylinder which sticks out from the main body of the firing pin. The cylinder moves forward compressing the tiny spring and pivots the back of dogleg down into the slot. So at this point the energy goes two directions. With the tiny spring compressed, forward energy propels the main firing pin body forward hitting the primer.
IF the dogleg does not retract, the main body of the firing pin is held from going forward and striking the primer.
I am guessing that is the mess the lawyers wanted to prevent accidental discharges.
Okay! here is the problem. The firing pin main body only moves forward IF the little ketch (the top bump on the dogleg) moves down in time to allow the main body of the firing pin to go forward. If not the FP is locked up. If for any reason like dirt, burs, poor fitting parts, gummed up oil, you name it, the ketch does not retract enough or maybe in time, the rifle does not fire (FTF). When that happens, the main firing pin body receives reduced energy transfer or like happened to my rifle , light hits over time turned into no hits and complete failure to fire.
There is a very good chance that if you simply filed off the little ketch (red arrow) and made the top line smooth, and all the original parts remained, the problem would go away.
However, having had mine apart a few times trying to fix the light hit issue I just chose to make the firing pin into a solid unit that can be undone and returned.
Hopefully this is the end of the FTF issues with this rifle for all time.
I hope that helps.