My brother just picked up an Excursion and had a wheel alignment done. He took a 2 hour trip and the Excursion drifts to the right at times. Is there something that could be wrong with the truck or the wheel alignment place? He had his Expedition wheel alignment done at the same place and it was good. TIA for any and all input.

 

Could also be stuck caliper pin. Drive then check relative temperatures left - v - right.