As a first comment, let me say that you probably don't need sway control unless you are towing with an awfully short wheelbase tow vehicle (which you shouldn't be doing). TMs are especially made not to sway, and most members agree that they don't, even in the most extreme conditions.
Second, you might benefit from the tutorial titled Trailer Sway and Sway Control. It is located in the TM Technical Reference Library, otherwise known as TM Info You Won't Find Anywhere Else. It is the first forum listed as you enter the site.
Bill
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