I have the complete Tereflex high steer kit on my 2015 Rubicon, Knuckles, tie-rods, ball joints, etc. My one gripe is that the tie-rods need to be adjusted after about 1,000 miles. Now maybe I didn't tighten them enough when I installed them, but come on, adjustable tie-rods???? Pretty dumb. Other than that, great kit. Once I tightened them up, no issues. I didn't have your drive-ability issues though. Drop brackets are never good. I didn't see if you had long or short arms up front. I have not had any issue with their ball joints, so far. About 3,000 miles on the jeep now, since the install. I'm on a 3.5 inch lift from AEV, but have the 4.5 kit from Clayton Offroad that is going on very soon. 3 link long arm front, 4 link long arm in the rear.