The "you can't adjust stovebolt alignment" advice you get from most people is a myth. I grew up around a shop in the 1950s where straight front axles were bent/twisted to adjust caster and camber on a daily basis. The only things missing in most alignment shops these days are the equipment and skills to do that. A simple piece of H beam, a 20 ton hydraulic bottle jack, and a couple of heavy chains are all that's needed to change camber. There's a couple of twisting fixtures that are needed to change the caster on one side only. Wedges between the axle and the front springs can be used to make the same caster change to both sides at once.
Tight, unworn wheel bearings, king pins, bushings, and tie rod ends, and a properly adjusted steering box are an absolute must before a good alignment can be done.
Jerry
