OK, I have a tandem axle trailer that keeps tripping one of the shackle straps when I drive over a terrace. In the normal configuration, the shackle straps are pointing up, but when one flips over, one is pointing up and the other is point down. Needless to say, one tire is off the ground when this happens. Any suggestions on how to stop this from happening, except stop running over terraces! Furthermore, when it does happen, what is the best way to flip it back?