Ahhhh, another case of the good ole "chevy lean" that most OCD truck owners struggle with, haha. It's very common. If you're only 1/4" off, then you're doing much better than most. If your tires are wearing evenly, the truck tracks straight, and your steering wheel is straight, then I wouldn't worry about it. And, it's normal for the torsion bar bolts to be uneven as well. Many owners have found that they're able to crank one side more than the other, before their bolts bottom out. If it really worries you, then I'd recommend going with your plan of getting everything fixed up when you get your new tires.