Did you buy them from a local tire shop? Do they have a rebalance policy?
Does your local high school have a mechanic shop? Mine did, and I used to take my rig in and have the students balance them. I was free! Once in a while I would throw in a case of mtn dew! And they would be happy! 
I ordered them straight from Mickey Thompson (I'm a dealer for them). At the time I worked at a different shop, so I balanced them myself.
I would never take my tires to a high school to be balanced, I know how hard they were to balance and how much weight it took. I would never trust a bunch of flunkies taking shop to get out of class to balance my tires.
