I just got the Rancho 3" Trail System installed on my Jeep and noticed the steering is loose and flighty. I believe this is due to caster being too low. Alignment shows caster is currently set to 3.36*. Installation specs for this lift has caster at 4.6* (+-1.0*). My question is how much shorter would I need to make my upper adjustable control arms to bring the caster back up approximately 1.0*?