My neighbor has a Class A with the F53 chassis and other than the CHF, the only thing he felt it needed was a steering stabilizer. He doesn't see the need for a beefier anti-sway bar, track bars, or any other suspension mods.
Have you had your coach weighed and are sure you are running at the correct inflation pressure or a LITTLE above and that your front axle is not loaded too light? A lightly load front axle will tend to make the rig wander.
When you have it weighed, make sure it is completely loaded, full fuel, water in the fresh water tank and all occupants are in their seats.