Thank you old fuff for your help.In this case I don't think the "spray paint" coating caused the problem, but sandblasting first might have contributed to it. Right now what's needed is a constructive solution.
So I am getting more info on this gun from the owner now. It was put together by a somewhat local (in the same state). I spoke with him on the phone and he stated that the forward edge of the trigger (surface that engages the cylinder stop) was never adjusted by him. he states that this is not something that affects the trigger pull and generally never is touched. I know the surfaces that are on this particular trigger where surely adjusted by someone at some point (either before or after this pistol smith had it). The gun is on its way back to him currently to have him evaluate it. Im about 90% sure that the trigger to cylinder stop engagement was ground down too far. I blast the guns with 100 grit aluminum oxide. It takes a while to just remove finishes with such a high grit of Al Ox. I find it hard to beleive that the blasting would remove enough metal to affect this. If so I would beleive that the work was not done correctly to begin with.