A friend of mine bought either a '99 or 2000 (can't remember) Ram "Off Road" truck brand new. It had the same symptoms (slight pull to the right), and he had back to the dealer several times. The tech's drove it and agreed that it had the right pull, but couldn't resolve it after probably 5 trips back. Eventually, he learned to ignore it. I bought my 2001 Ram 4X4 used in 2005...it has the same right pull. Soon after I bought it I put new tires on it and had them check the alignment. They said it was good, and that set of tires wore perfectly. I don't know... If you figure it out, please post the cure.