Hi, I have noticed that the holes in the Chasis and axle for the trackbar are not the same size. The front hole on both of mine is 14mm, however the rear hole is 15.2 and 15.5mm, still perfectly round, not wallowed. My JK has only 3000km on the clock, with 1000km of it with the lift kit. I have had death wobble on two occasions, but I could feel the onset at slower speeds. I posted this on the forum, and several other users have also noticed this. I would suggust that the larger hole allows movement which then leads to wallowing?