Henne and Orr's probably doesn't have a parts account with Omega, which would be a good reason to decline servicing your watch. I haven't researched it, but I would be surprised if any watchmaker in Pittsburgh has a parts account with Omega right now.
Here's a link to the AWCI "Find a Professional" search engine, in case you would like to search its directory of watchmakers near you:
https://awci.memberclicks.net/find-a-professional