1971 Front End Alignment

[meatballsub97]

I have a 71 K15 that has all new parts in front and a recent alignment. I am still having issues with drivability. The truck is very "darty" and hard to keep going in a straight line without a lot of constant correction. It also does not return to center at all when turning. I am looking to add some caster and or camber to it. Is this possible? I have seen ball joint sleeves but I don't know anything about these? I have read tons of posts about these trucks and alignments but I am still having trouble figuring out what to do. As I said ALL front end and steering parts are new, right down to the rag joint and steering box. Thanks for all the help as usual.