At ~7000 rounds, the SA pull on my 92FS developed an occasional weird staging. It feels like there's a wall, then a tiny "dry friction patch" then another wall where it actually breaks. The hammer does move a little in this dry patch. Is this common? I removed the trigger bar and cleaned the area, but I'm guessing I need to clean the other side of where this hook contacts when the hammer is back:
(That's not rust on the bushing, it's the lighting). What is this contact point called and how do I get to it? And what else should I clean and lube while I'm in here? I'm already out of my depth but appreciate any tips.