Did you replace the spring & plunger? If so, did it work?
I recently picked up a 1989-vinatge Bulgarian-made Makarov. After cleaning away enough cosmoline to rust-proof a six-bottom plow, I found that it's really in quite nice condition and shoots like a dream. One minor problem I've noticed, though, is that the forward part of trigger guard does not want to fully seat up into the frame. It hangs about 1/16" inch low. You can push it up to where it's flush but it won't stay there. Does that sound like the trigger guard spring and plunger need to be replaced?
Did you replace the spring & plunger? If so, did it work?
Grondacious!?!? That could be serious.
Gotta see a pic of the new-blued gun!