When safe (on a straight highway with lots of room) try to watch the trailer in the side mirror. Pick a spot of dirt or something on the mirror, and line up the rear corner of the trailer with it. When the Reese Dual-Cam is set up correctly, there should be zero movement relative from the trailer to the mirror. It should look like you are driving a solid, one piece unit. It's kinda hard to describe, but when you see it, you will know what I am talking about.
If the corner of the trailer is moving around relative to the mirror, then you are getting some angle at the hitch between the truck and the trailer, and you need to redo your setup. IF it isn't moving, then your wandering is most likely a tire issue.
I run the Dual-cam and I have no sway or "angle" between the truck and trailer on straight roads.
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