This summer our 2012 Tioga fuel filler hose developed a 1" crack in the hose above the leaf spring.  During refueling, fuel started running on the ground.  Investigation found the crack in the "weathered" hose.  This was temporarily patched using electric tape with a duct tape final wrap.  The gas cap alert light on the dash  remained lit during the 2 day trip home.

The repair shop found another leak ABOVE the fuel tank.  Ford dealers would NOT work on the unit. They said it wouldn't fit in their repair shop.  At 31', it would mean they would another work space.

The rig has been store UNDER a roofed open area  since its purchase.