Hard to diagnose without more info. Is the spacing the same on both sides? I wonder if you have a bent hanger, failed equalizer, another broken spring or somethin of that sort. We had a spring break at the connector last year and a casual look didn't alert me as I saw no parts hangin. But I noted the wheels on one side were much closer together. Turned out the rear spring had broken right after the hanger. At rest it looked fine other than the wheels on that side were closer together? I know once we moved it'd have been obvious.
I wound up replacing all the springs and the equalizers. We now have 28,000 miles on the rig and things look good. Good luck!