Thanks for jumping in on this issue-lots of views but no answers. Yes, the lower shaft is to be centered-ie same exposed length from the boss in the subframe to the end of the shaft on both front and rear positions-manual says about 1 11/16″ from the boss to the end of the shaft both front and rear. But I believe once the shaft is installed in a centered position, the tool J-8808 locates the control arm spacing from the boss to the inside of the arm. So is the set-up to center the arm front to back or is that spacer used in only one location to give specific spacing to one side while the other side has a resulting space which is not equal?
Is that movement of the upper arm acceptable to do and apprx how far off center is a good starting location for the alignment shop?
Thanks again for the help.