I would attempt to have them plate only the "shoe" portion of the trigger, not the plate behind the trigger that fits into the innards of the gun. That's great terminology, right, but I'll bet you know what I mean. It's possible that three layers of plating on the entire trigger could require some refitting of the rear plate mount portion into the guns innards. Depends on how close a fit you currently have, and how much plating might build up those surfaces. I would at least check into that. Lotsa luck with the job.
