Nemesis
Russian Grizzly Adams
No, I'm not confused at all ... as you say, the hook does not fully engage. There is no difference.
you're not? good. now go take your trigger, do what you want to the hook/engagement surface and let us know how it goes
i dont want to be rude, but you're not seeing the problem here with it and frankly you dont seem to want to listen...so i have no further interest in this.
good luck with your trigger if you choose to try anything with it, just please be safe.