Who to believe? The shop in the Valley thought the motorhome needed a lot of work. The shop in San Antonio said not so much. I didn’t get a sense that the guy in the Valley was running a scam. He wouldn’t have benefitted much from an expensive repair. Most of the money would have gone for parts that are hard/impossible to get. On a level of which option would cost more or less, I choose to believe the one that only costs $90. On another level though, I actually am left wondering how/why two shops could look at the exact same evidence and come up with opposite diagnoses.