Thanks Trace,
I agree Giant probably just measures the axles. I've been dealing with Doug up there and he's been great, I'm just trying to get to the bottom of this whole thing so I can keep decent tires on the trailer in the future. I took the trailer to a shop Twotoes recommended and they aligned it and installed the wet bolt kit the Dexter guy gave me in Wyoming. It was late Friday night when I picked the rig up so the guy that actually worked on it was gone, I'll call and get the scoop Monday.
I was a little disappointed in the Heartland warranty guy he told me it was no longer in warranty since I'm now over a year ( last month), even though the problem has clearly been there since I purchased the trailer. I understand each component is warrantied by a different company ie; Tredit, Dexter ect. but when the tire guy says it's alignment and balance and the Heartland service guy says the axles are fine it leaves me in the middle. Also when the Tredit rep says they don't balance trailer tires (at the rally), and then the tire guys says the tires are wearing bad because of the alignment and balance it gets confusing. I'll balance all the tires I put on in the future.