Turtle... Thanks for the link... I know where i will be this weekend, figuring out TW
8iron - It is a 2013, this was my first full year pulling this rig, I picked it up a year ago today.
Coyote - I did consider me just being overly sensitive, but on both of the travel days that I experienced problems my wife commented unsolicited on how much it was moving. For her to notice it with out the input of the steering wheel in her hands told me the movement was fairly significant. The road grease theory is interesting and certainly a possibility.
Anyone have thoughts on the trucks factory rubber and how that contributes to sway? I am actually looking at replacement tires now and considering brands built for heavier loads.