Go to the ancient looking fellow with Grey hair, or the guy that looks like a chubbier Billie Mays. The old dude with brown hair is the angry one. I think Aldi-brand Billie Mays is the guy that actually does the repairs.

I’ve gotten a few O gauge engines (prewar and modern) repaired at Joes Train Station on County Line Rd in Hatboro (or Huntingdon Valley maybe). There’s 3 old dudes that work there - one is a dickhead and the other two are awesome.