I’ll vote for looking at the liquid springs.
Wrote up a long review on here after we had it put on our 3051 Forester.
They have front and back for the F53 chassis.
In short it is the nicest upgrade we did and worth every penny. No more fighting in the wind or when semis pass - responds instantly to counteract the sway.
Rough patches in the road much nicer ride.
Liquid Springs on our Forester 3051S (long)
https://www.forestriverforums.com/fo...d.php?t=231080
As mentioned it is not inexpensive but I’m no longer tired at the end of the day after driving either.
We had it done at the factory in Indiana.