I have a 99 Cherokee with an RE 3.5/JKS track bar yadda yadday.. While turning the wheel back and forth quickly doing around 2-3 mph something underneath clunks. The track bar has been threadlocked and tightened down and my adjuster sleeves were also tightened up. I've got 31" MTRs and after only 5k they are cupping pretty bad. Any ideas as to what this could be?