Welcome on your first post Tom. The closest double shotgun gunsmith in the Pittsburgh area, with a good reputation, would be Jerry Andrews in Moundsville, West Virginia.

I have bought a couple Syracuse Lefever doubles from him, but never had any repair work done by him. But a quick Google search will give you a lot of positive reviews, and I've never heard a negative comment about his work. His contact info is:

Jerry Andrews 1225 Grandview Road Moundsville, West Virginia 26041 304-843-1740.

Voting for anti-gun Democrats is dumber than giving treats to a dog that shits on a Persian Rug