Is the adjustment procedure documented in any manuals for the 123? I have a CD with manuals on it, would there be a description of the adjustment procedure avalable there? Although a re-manned box is expensive, is the actual job of pulling it out and replacing it straight-forward? I too have a fair amount of play that I'd like to remedy. I've been accumulating related parts in anticipation of the work, new idler arm, tie-rods, lower ball joints (uppers and the control are are new). My plan is to crawl around and see what else is replacable. Actually, the digrams in performance products catalog are pretty good and I may use them to help figure out which bushings and all should be replaced too.