Most F53 chassis come equipped with front track bars, are you sure you don't already have one. If you don't have one, I would get one for sure. Our 2015 Windsport 27K on the 18k chassis came with a front track bar and had similar issues as yours. The addition of the rear track helped a lot. Semi's are normally not an issue, but gusty side winds I think will always be felt.
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