If it is the female threaded part that has moved then a washer on the head of the screw most likely will raise the head above the surrounding metal , potentially creating as many problems, i.e. the top lever catching on it, etc. Best to see if female part can be shimmed away. My gunsmith lays a little Accraglass in the inlet of the trigger plate and carefully inlets it again till the breech pin is clocked when tight.

John McCain is my war hero.