F53 warranty problems

It can be hard to find a dealer that can handle "Super Duty" or "Heavy Duty" work. Heck, my neighbor works at a local blue oval dealer and I tried to schedule some work at the dealer and specifically request him since he doesn't make money unless he is turning wrenches. The service adviser that answered the phone told me they could not handle my 32' Class C motorhome on a Ford Chassis. I even remarked that they had a commercial on TV about their new service bays that could handle big rigs/trucks. He told me no. I told the neighbor, he spoke with them and got it straightened out. Bottom line....it is hard to find facilities to work on these things, more so when the facility does not know they can handle the unit. Conversely, I had a buddy talk to a service manager at a small dealerhip who told him if it didn't fit in the bays they would work on it in the parking lot.....I told him to patronize that dealer as they seem to want to please the customer. We are currently hagglin over a Winny 35F on an F53 chassis.....One of the things in my mind is who/where can I get this thing worked on if/when it needs a wrench turned......