I have had occasion to call for mobile RV repairs on many instances over the last 40ish years. I have never been disappointed. A few years ago we had a water heater problem on the Winnebago and the mobile guy spent quite a bit of time trouble-shooting. Then he realized that with the Winne's heat on the road system he was out of his league. Told us where to go and what was needed, and wouldn't accept a dime for his time. As I remember we treated him to lunch for his time. In Yellowstone a mobile repair tech came to the campground when the dash a/c system frozeup threatening the serpentine belt. Again, out of his league, but he called the nearby shop, Big Sky Rentals, and we had an appointment for the following morning. Glad all worked out for you.
Happy Trails.