Let me add the caster adjustment is very important, Mike...too much and your truck will run straight as an arrow but will require arms like Bluto to turn the steering wheel in town. Or power steering...you can run about 6 degrees with power steering. Also (very important) if your front wheels / tires are a smaller diameter than your rear ones, your caster will indubitably be out of adjustment...it will be heading toward zero or maybe even negative caster. Zero or negative caster will make your truck steer easily but it will wander around like a drunk in a carnival fun house. As Jerry correctly mentioned you can't adjust one side independently of the other (to compensate for road crown).

In 60 years of being around these trucks I've never seen one need the axle bent for camber adjustment.

If you need a really easy way to know when your steering gear is centered (internally) just find a small inch/pound torque wrench (the kind with a needle and scale) and use a socket on the steering wheel nut. With the drag link disconnected, you can see exactly when you're in the center. When you rotate through the high spot the needle will show you.
Good luck.

~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end