So I have a 2000 tj with a Quadratec 2.5” lift kit on it. When I put on the lift there was a really bad vibration at first. So I then, after looking on multiple forums, I put a transfer case drop on. It was a 1/2 in plus a couple washers making it roughly 3/4”. It did help calm some of the vibration but didn’t completely eliminate it. So I decided buy both upper and lower adjustable control arms in the rear and remove the t-case drop. I set the pinion angle 1 degree lower than the transfercase output angle and yet the vibration was still there and it was worst, occurring while accelerating starting around 2500 rpm and continuing through out the rest of the rev range. Now, the weird thing is that while casual driving my passenger rear tire rolled over a mound of snow, and a loud popping noise was heard and the vibrations were completely gone. But then after another day of driving the vibrations came back. Another thing to note is that my rear axel is off center with the track bar relocation bracket installed with the kit. So, I don’t know if that could be the issue. Any help would be great.