As you can see in the second picture the shackle is below the tandem yoke and not above it . To repair ensure everything is in good shape such as no bad springs and all are proper matched sets i.e. length, jack up trailer on that side and undo the shackle that is on wrong. Put the spring up on top above the yoke as required and reattach the shackle so that yoke looks like the one in the first picture.