Nearly impossible to get Class C Chassis serviced?

Most gas motorhomes and class c have the same gas tank and hose arrangement, hoses usually feed the generator. Had my tank dropped and the fuel pump replaced about two years ago on my F53 Ford chassis motorhome. It was done by a local diesel truck shop. They did not put it on a lift. They used roll around floor jacks to get up to drop the tank.
First place I called.