I checked the sear setting several times, turning the screw slowly until it fired, then backed it out 1/3 turn as noted in instructions.If you think my sear setting is causing the creep, would you guess i need to tighten the screw or back it out more?

I had the most trouble determining where to set the trigger stop in the process. what does that screw really do and why won't the trigger pull if the screw is set too tight?

i am comfortable with determining if it will fire. The key, as noted, is to thoroughly test by slamming the bolt repeatedly and running through such scenarios. I did this until i was convinced it would not fire by accident.