I have a new (to me) Time Out Easy Camper and notice an occasional pulsing or pulling sensation when towing. This is most notable when traversing bumpy roads. I have not had this sensation when pulling my cargo trailer (Escapade).

I have a long tongue and the hitch weight can be as low as 25# and as high as 35#. It occurs when both loaded and unloaded. It doesn't sway. Is it tire bounce or just a result of the rubber torsion bar suspension?

Does anyone have any insight they can share?