I had the same issue. Mine were way over tightened. Once I loosened and torqued to specification the bars were still pretty stiff and hard to move. After 5000 miles of towing things are much easier. Check the torque occasionally.
2016 Siverback 33IK, Towed 40K+ miles
2018 Ford F-350 Lariat 6.7L V8 Diesel 4WD Crew Cab
Andersen Ultimate Hitch
RadMini Stepthru eBikes
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