My unit has Forward adjusting brakes... Use them 'too' much and they will lock up on you from adjusting too tight.... Every year, I am backing the brake pads off of the hubs.
Everyone should check your brakes and adjust them (off) when needed... Go on One very long trip and a lot of heavy brake usage and I will (almost) guarantee you that your brakes are 'set' too tight on your unit.
2013 Forest River Salem Hemisphere SBT312QBUD
2001 CrewCab F-250 7.3 PowerStroke Diesel
SuperChip, BTS transmission, 6.0 Trans Cooler