Are the bushings in good condition? Adjustable LCA's or stock?
What type / how high of a lift? (>2.5"?)
Did you replace the sway bar end links? (probably not affecting it but thinking out loud electronically.)
Rear coil spacer out of place slightly? (spring misaligned / moving)
Never mind. Sounds like you got it.
Black Forest Green 2012 JKU Sahara, Tinted Windows, Chromed Door Handles, Star Fab Door Stops, Brake controller, Poly Filled Speakers, Black Hole Mod, DIY Grill Inserts, Blinker Mod, Aries Front Bumper, Spyder Rear Bumper, 2" Rancho Lift, JKS Disconnects, 10K Warn Winch, Helix Air Compressor 315/70/17 Duratracs on 17x8.5 Warlords, IL-PU36, X-treme 9008 bulbs & PIAA's