Has anyone installed a Rancho 4" lift kit on a 2004 F150 new body style? If so, did you encounter any problems? Were you aware that this kit sets the front differential at an angle? Did you find that the drop down brackets are mis-marked as to which one is for the driver's side and which one is for the passenger's side? I contacted Rancho and they would not explain why the differential is set at an angle, they simply stated that that's he way the kit was designed and that they were not aware of any problems arising out of the differential being set at an angle.