Take the track bar off and stick a 9/16 bolt in te mount holes on both ends and see if it fits snug. The reasob for this is because that hole is a 9/16 hole.
Do this without the track bar in place. You should have no more than 1/16 of play in the mount holes if there is anymore than thr holes are egged out. That was my problem.
The fix for this is to weld a grade 8 9/16 washer onto the mount.
Hope this helps i had death wobble for almost 2 months before i was able to get it all taken care of now i just need to get my new track bar on.
I think it would be helpful to note how your track bar hole got wollowed out. If I recall, it was because you never actually tightend the bolt down to the proper torque setting. That alone would have made a BIG difference if not fixed things without having to buy anything.