If I remember correctly, mine is secured to a solid bracket that is accessible front the back of the swivel frame . There is a mirrored door on the back to be able to get at the bolts
It was a rainy few days at Algonquin Prov park...tarps kept us dry.
Wayne --Belle River (Windsor), Ontario
2013 Sunset Trail Reserve 25RB..
2015 White Chev Silverado 2500HD 4x4 (6.0 l gasser)
2003 Mountain Star 890SBRX Truck Camper