The checklists are a great place to start but keep your eyes open and try to look at everything for something out of the ordinary. In our case it was a crack in a front landing gear leg. You never know what may have happened since it left the factory.
Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.