In addition to the residential fridge install, I had them adjust the Koni adjustable shocks.
They pulled all 10 shocks and inspected them. They adjusted 7 of the 8 adjustable ones (one just turned and turned, so could not be adjusted). Tried to find a replacement, but none to be had in Eugene. Cost was $178, which I thought was reasonable (unlike the fridge install).
I talked with a number of people who have had work done at OMC, and all were happy with their experiences.
So, I guess I would take my coach back for mechanical work. i just would not want them doing any upgrade-type work.