I recently installed an RE 5.5 long arm and a SYE on my 92 XJ 4.0, AW4, NP231. Since then it keeps kicking out of 4H and 4L. I've adjusted the linkage all around without fixing the problem. I had to cut shift rail down during SYE install to recommended 1" but would think this might only effect 4L if still to long. Any thoughts?