Truck pulls to right

Camber is "non-adjustable" but some shops will cold bend the axle to tweak the camber.

I'd look at everything suspension and steering related. Even the rear axle alignment can affect how well the truck handles in a straight line.

 

so when you swapped the steer steers from right to left. did the truck start to pull to the left

 

Start with the basics first.....once you did work on the steers, you should have got an alignment

 

I had a 2018 Volvo that did the same. They did a complete thrust alignment and it still pulled. The POS shop manager said well that's all we can do. So one evening I got the might manager, a really smart guy, and he started looking. He finally said it's your tires. Took off the Bridgestones and put on Michelins and fixed it completely.

 

If there’s nothing notable on the front end, then it’s the back end.
If your rear axles aren’t square to the frame ( thrust angle) then the front has to steer to compensate.