Ok crawled under and took a look and some measurements. Leafs look to be the right size but rear shackles are funky. Look too long and angle outwards about 2". Look to be the culprit, what are these meant for?
If I install the correct shackles from the Mancini link below, my problem should be fixed right? Also, is it safe to assume the rear will be lifted slightly due to a shorter distance between the front hanger and rear shackle, creating a larger bow in the springs?