If he lives in Georgia he may have to contact Memory Station in Lawrenceville GA, on highway 441. I hope that I have the city correct. Not too much model train stuff in Georgia, especially O gauge. Savannah GA is mainly H.O. train shops if they have any there.
Another choice could be the Roundhouse South near Daytona Beach FL as he handle MTH and repairs MTH.
The best place for MTH repairs that I have found in south Florida is Ready To Roll in north Miami, on NW 141st St. This place even has Mike Wolfe stop by on occasion.
Lee Fritz