The upper king pin style BJ is built with lots of vertical movement in it. It is not designed to carry weight only center the upper part of the knuckle. The causes problems when the lowers wear laterally and ball will not stay centered, the lower walks out of center and the moveable upper BJ allows it. Two ways to fix it, a full ball joint on top that carry's part of the weight and doesn't allow vertical movement or better parts to limit the wear. The way the suspension system works inherently stresses things laterally and causes the accelerated wear, lifts just make it worse.
You will likely have to get the 1/2 degree offset up to get the style that does not have vertical movement, none of the standard BJ's I have found had anything but king pin style.The OE uppers in NAPA chassis are not that good, lucky to get 20k out of them on our roads. The Raybestos Pro's I have are going on 100k with no slack or appreciable wear. I cannot say as much for the drag link BJ's, the t-type steering upgraded drag link ends are seriously deficient in strength with the NAP chassis. Tie rods end are good but drag link is a problem. Nest step is a cross over steering with large BJ's to support the weight and abuse just driving to the store entails.