I stopped by AAP in Milford, VA to have my mid cruise air fixed. It was showing a low pressure reading on the SMX. Had bitched it before at a dealer. Evidently, they just topped off the R22 and left it at that. The tech at AAP --almost 40 years working on them--found the leak and fixed it.
As an aside, the tech mentioned that if folks charge these things who are used to fooling with house heat pumps: There is a tendency for them to overcharge our cruise airs in the bus.
Professional, quick and fairly priced. Located 10 miles east off Exit 104, VA I-95.
They have a hookup so one could stop in the night before.
Good folks.
And then, had a tag tire blow on the way home! I can't win.