I haven’t got any extra weight in front or back and mine sits level. A level across the bed rails shows it’s perfectly level. I’ve heard of some guys they will use an extra 1/2” spacer from Teraflex in the back if you want a little rake or have extra weight out back.
While deciding on my Teraflex lift I searched for the same info and found it very difficult to find, so am happy to help. I’ve got an RT2 lift which uses springs in front and a 1/2” spacer in the rear. Center of wheel to bottom of fender measurements on my Rubicon are 25-1/4” front and 24-1/8” rear.