Is there a problem with your actual sway bar its self, or is the angle now off because of your lift?Well I'm usually driving about 35 miles back and forth to work but on the weekends I do a little bit of trail riding, mudding, and riding through sand dunes.
Very well could be a loose bolt in the sway bar linkage, maybe try tightening everything down and see if that helps before replacing the entire unitI may just need a new sway bar link kit