Steers like Crap

don't ignore idler mount on k-frame either.
"Square" shoulders on tires can contribute to "nibbling" on uroad seams. Back when we had nothing but bias, and bias-belted tires in the 60''s and early 70''s we REALLY had to deal with that nibbling problem. The advent of wider, low profile tires did nothing to help that problem.
I'd double check your lower ball-joints, too. I've seen brand new lowers with excessive slop in them. Also if any of your steering linkage ball joints have ANY play in them, your toe will be changing. You should NEVER have toe-out. I like to run a little toe-in, so at worst you'll have zero at speed.
I agree with posters, don't expect rack & pinion road feel.

Yeah definitely, proper alignment specs are critical. Look at the alignment specs on modern cars that run larger diameter rims, they all have large positive caster numbers. That’s not by accident.

And as always, just because something is new doesn’t necessarily means it’s good. I’ve seen some really terrible brand new Moog ball joints, their quality control these days is terrible.

A brand new one? No way. That beeotch wouldda got sent back if it was mine.

They can only be bench adjusted from the factory. They should be close, but a fine tuning shouldn’t be cause for sending it back. Guy on the assembly line misses the adjustment by half a turn and you send back an otherwise perfectly fine steering box?

Besides, you’re gonna have to adjust it at some point. Better to be aware of the proper procedure.

I do seem to recall a member here having some issues with PST about sending a box back because he adjusted it, but PST later clarified that adjusting the box may be necessary and the reason they didn’t take the box back was because the member had clearanced the case. That’s here...

PST steering boxes

And several members said they needed to fine tune the adjustment on those steering boxes as well.