a common issue on lifted WJ's is the axle track bar mount oval's out. This may have happened to the frame side mount as well. A fix for that is to weld a hardened washer or metal plate to the outsides of the mount.
I personally had the same problem, so i welded a hardened washer to the mounts and enlarged both mounting holes to 9/16" and used grade 8 bolts and hardware. If you upgrade size of hardware, you will probably have to ream the metal bushing out. What I did was take my stock track bar, and removed the metal bushings. The OEM ones have thicker wall and allow to ream to a 9/16" without losing rigidity. I then installed these into my JKS adjustable track bar, which required reaming of the rubber isolator ( I had KOR's hardened ones) So far, everything works great.
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