New Steering stuff; alignment issues

[BMERDOC]

Originally Posted by willett

Excuse my ignorance but how could the shims be the problem if they previously (presumably) did the job? I would be more inclined to point the blame at wearing parts ie. ball joints and steering box. I'm assuming that Your steering box is oem......

I don't mean to be presumptuous, just seems logical to me.

I'll add this. Over the years as a truck gets alignments the aligner adds and subtracts shims. After a while it seems that shims keep getting added and added. The aligner normally calls that good enough and the angles end up going in an undesired direction shollowing (negative) caster and making camber excessively positive. That's why my advice is to remove all the shims and start from scratch with new ones.