Man, I would be raising heck if I were you. I sold tires and wheels for 4 years and we ALWAYS took care of issues like this at our cost. It's not the customer's responsibility to know that the wheel fitment chart is incorrect. Did they tell you that the wheels need to be test-fitted? How long were they on the truck before you noticed that they didn't fit? 10 minutes? Doesn't that count as a "fitment test?? Read the fine print in the invoice they sent you... See if it says anything about test-fitting, etc.
If AR isn't going to switch them out then the retailer should at their cost. They could still sell these wheels as new-used and get some money out of them.
One last thing, you should take your wheels and test fit them on the right-front of every K10 you can get your hands on. Then tell AR that the wheels contacted the rod end on XX-percent of the trucks.