Missoula has a dealer close to the Interstate. Worth a quick stop since you are headed that way. They sell several brands including the AS. Expect to pay your way.
Maybe the best would be to do research and become the expert on your hitch. A few specific questions of forum members on your TV, TT and hitch might get you started.
Often folks expect too much. Wiggle can be identified as sway. Tuning is required for every load out. It also includes TV parameters, tire pressure and type of tire, in addition to hitch adjustment.
A lot of flaws can be mitigated at 55 mph, but understanding what you have is key to safety and comfort. Asking for help is quite smart.
Good luck with your investigation. Pat