Your main sear looks in really good condition, the sear face is still flat & crisp with no visible damage (in the photo's). The auxiliary sear doesn't look too bad either but the pics aren't quite as clear.

I'd check the sear face of the piston slot. I had an Omega which had this face butchered with a file, presumably to lessen the release angle and reduce trigger pull. It was an epic fail, still worked but trigger functionality was terrible. I had to re-cut the sear face on the piston to the correct angle and re-harden.

Cheers
Greg