Not sure I understand this statement.....have you tried backing off of the driver's side and tighten up the passenger more and see what you get?
And did you keep track of left and right? I never knew if there is L and R but always kept them on the same side...and I just saw this.....maybe others can confirm. http://www.moparts.org/Tech/Archive/susp/7.html
Edit to add: I see they already did!
How are the rear springs as far as being even? If you jack up the car under the exact center of the K-member, does it seem even side-to-side when viewed from the rear?