Anyone have a 2018 Keystone Cougar 29 series 5er?

I towed a cougar half ton with a 2014 2500 ram 2x4 and was nose high by a large margin. My back wheel broke away in Biloxi Ms taking the sheared hub with it. We were lucky it happened in town. We ended up stuck there for a week while awaiting parts. The back axle, apparently, was carrying too much weight causing the bearings to fail and they had been re-greased only six months prior to this incident.