Help Savage 220A 16gauge

[PBRLost]

I know that it is not worth much to most, but Grandpa bought it new. Not sure if it is the firing pin or the spring, but it likes to fire when it wants. I know that most would tell me to not disturb the springs/pins, I have taken pictures and a video during disassembly. I used them to re-assemble after a detailed cleaning. Now it will fire after the second strike. Looking for the following parts: Firing Pin & Striker, Mainspring(Firing Pin Spring), Sear, and Trigger. I can find breakdown for models 219/220, and other models, just not the 220A. Can you help?
PBRLost

 

[Clark]

The 220 is the shotgun barrelled version of the 210.

The 219-L is a miserable gun to take apart and worse to get together. I was replacing a firing pin. De Haas hated them too.

The earlier rifles are good guns.