Originally Posted by Ignacio49
...the bore seems to be fine, but the cylinder to frame fit & gap has been narrowed. The cylinder does not close nor rotate as easy as before. It improved with lubrication and some dryfiring, and hope it will get "normal" after some use/dryfire.
IMHO whomever did the work
needs to fix this. NOT YOU.
Based on what you've already written, I believe this person did an incompetent job. The more you monkey with the gun in an attempt to address their incompetence, the less chance you or your brother have of getting them to own up to the problems and potentially replace the gun.