Stock 2 suddenly light strikes

[Tirppa]

Hi! 

 

Small frame stock 2. Extreme Titan hammer. Extreme firing pin. PD firing ping spring. Had extreme medium hammer spring now 15.5lbs PD. I replaced firing pin and spring to new ones. I get 1-2 light strikes on factory Geco ammo every 200 rounds. Both DA and SA. I shot around 10k rounds with the old parts with no issue. Replaced parts after issues started and cleaning didn't help. I'm running the gun without FPB ATM. And the last 10k rounds. 

 

I'm at a loss here. And have a match coming in two weeks  

Edited September 12, 2021 by Tirppa
Added pictures of old FP

[Yagi]

Geco ammo uses hard primer. At least in my experience... Try a cci.