So we upgraded from a 26Ft to a 37Ft TT and we have lots of sway now when windy or passed by a semi. We are currently using a WD system with a friction sway bar. We were wondering if we should switch ...
You need more tongue weight. You need at least 12% of the total trailer weight on the tongue (even more is better). Go to a scale and get the weigts to be sure. You have less than 10%, that's a accident waiting to happen.