hey I have a 4.5 rc x series lift on my jeep and it came with adjustable upper and lower control arms! any way it said to set them at 15.5 for the upper and 16.5 for the lower wich is what I set it at! any way I had it at the alliment shop today and they told me I need to shorten up the left front lower arm to get my rig to drive straight something to do with caber/caster! has any one ran into this problem and what legnth do you guys have your a arms set at with a 4.5 lift thanks!

 

If they were doing the alignment then they should have done it for you to get it into spec.