Im pretty sure you sorted out the issue by now, but after looking at your other pictures, was the final measurements taken with both the truck and 5er on the same pad?? I noticed in the pictures, it appeared that the rear wheels were on the pad, and your front were lower and not on the pad. Coult this have been the discrepancy??
2014 Voltage 3818 (Epic I & II)
2005 Fleetwood 31ASV BP Toy Hauler
2017 Ram 3500 Longhorn DRW, 4x4, 3.73, Aisin
4 Seat Long Travel Sand Rail, 97 Jeep TJ Rock Crawler, 68 Roadrunner, Various Quads