what year is your rig? 08s have a weak steering rack from the start. there are at least two people with 08s that have had to replace their rack. one has his lift a little more then 3.5" and the other has his with almost 5" of lift. the 09s and up are suppose to have a stronger steering rack so if you were to replace one it would be the best replacement. do you have any sort of cradle drop to prevent too severe of angles on the cv's, ball joints and steering? im not sure how much lift i have for sure maybe 4-4.5" but my center of wheel to bottom of fender flare measurement is about 22.75" or 23" and i have not had a problem with the steering on mine yet. i know its only a matter of time cause i have replaced plenty of other things, not necessarily due to the lift but this thing sure does like to break on me. having overly large tires to turn is probably also a big concern for the stock steering because the two guys that have had theirs gone out are on 33" tires, im on 32s.
cant wait for the pics

i wanna see some detailed ones of the suspension and what components did you use?