We have 2026 TRD Sport 4x4 and tow an Airstream GVWR 4,300 lbs, tongue weight 490 lbs. We have the Blue Ox Weight Distribution hitch and Sway Pro bars, and when properly set up, no sag, no bucking on the freeway. Smooth as silk. But without the sway bars engaged, it does sag.My wife and I are planning on taking a 1 year trip around the country in a travel trailer. I have a 2026 trd off road hybrid. I have figured out all the specs except how to deal with the rear axle sag when the trailer is in tow. I looked into both airbags and heavy duty springs. The airbags take away from my off roading ability and the springs give me a stiff ride when not having the trailer hooked up. Does anyone have rear world experience with this.