First, congratulations on your new coach and welcome to the forum!!!
You are probably experiencing the same problems everyone has with the F-53 chassis, being blown around by semi’s and wind.
The first fix is free and makes a HUGE difference, it’s called the cheap handling fix or CHF. The fix involves moving the links on your front and rear sway bars, takes about 1 1/2 hours with simple tools. Search CHF on the forum for details. After doing the CHF get your front end aligned. After completing the CHF and alignment you will think you are driving a new coach!!!
Next add a steering stabilizer, Safe-T-Plus and Roadmaster are the major players, my nod goes to Safe-T-Plus. The steering stabilizer is a safety item that also reduces driver fatigue. There are several YouTube videos that explain and demonstrate the CHF and steering stabilizers.
Lastly you can add a track bar to the rear.
Best wishes, go out and have FUN in your new coach!!!
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