Reputable RV tire shop in NE Atlanta suburbs?

[RV-Travelers]

We recently had a set of Borg dually valves installed on our Class B RV by a local shop. When we got home (20 miles or so) and I checked the tire pressures I discovered that any pressure on the stems resulted in a significant air leak.

I took it back to the shop that did the work. They dismounted the tires and tightened the valves and that seemed to fix the issue and we didn't have any problems on a short trip.

Today I was checking the tire pressures and found the same issue. Any deflection of the metal valve stems on the rear inner wheels caused a major air leak.

I'd like to take the RV to another shop in the area that specializes in RV / truck tires but don't have any idea where to take it. I recently stopped at several tire local tire places (Mavis, Big 10, Tires Plus, Walmart, Costco) and none of them said they work on RV tires, even when I told them it's just an MB Sprinter, not a "big" RV.

If anyone can recommend an RV / tire shop in the NE Atlanta suburbs (Duluth, Suwanee, Buford, etc.) I would be grateful.

On a related note, are there any nationwide or regional RV / truck tire service places anyone can recommend while we are on the road?

[RV-Travelers]

Did some web searches and decided to try Affordable Truck Tires in Auburn GA. They are a commercial truck tire facility working primarily on 18-wheelers, but they were able to tighten the loose valves and they seem to be fine now. Nice folks and a good experience.