If you have a lift that required a track bar relocation bracket, make sure it is tight; I retightened mine during the weekend, and popping sound stopped... I also ordered a JKS Telescoping trackbar to replace the old track bar and the relocation bracket completely (plus, this ba suppossedly allows to "disconnect it" when wheeling for maximum flexing, which is good; in my case, I prefered not to rmove the track bar because the rig is a daily driver).
Felipe