I currently tow a 30ft - 2011 open range roamer 303BHS (7100 dry) with a 2013 f150 ecoboost (previously a f150 v8)and we loved the design & floor plan as it was different than all the others at the ti...
Like others, I'm betting that your tongue weight is too light. Do you have any heavy items you could place in the front of the coach? Then you could take a test drive to see how it reacts.