[Tx Firefighter]

I air the tires up enough to make the bottom bulge go away them set the camber by using a large carpenter's square between the ground and tire sidewall. Set the camber so the tire is vertical to the square with about a 32nd of an inch gap at the top.

Set the toe with a tape measure checking between front and rear centers of the tire treads. Set it 1/8 inch toe in or so.

When you drive the truck, if it drives too light, adjust the caster more positive by adding an equal thickness shim to each side on the rear stud. If it steers too heavy (not likely) subtract an equal thickness shim from each to reduce caster.

It seems kind of dirty but I do all my own trucks this way and never get less than 50k miles from a set of tires and my trucks all drive hands off straight.