All other things being equal, won't the difference in caster (+4.4 vs. +4.1) cause a slight pull?
That's what an alignment guy told me. I don't know if the above difference is enough, but the caster needs to be as close as possible side to side.
I did not realize what they were doing with caster till I put my truck up on a lift with the roller plates on it. I took one of the tie rods loose, and the whole frontend of the truck dropped and the front wheels splayed outward. I had to actually jack the front of the truck back up to get the tie rod back in place. I did not realize they were lifting the whole truck up with the front end alignment, but I read up on it and the caster is the main culprit for this.