I hate the new double drag link steering systems. It seems like anything that could go wrong does. Any wear in a bushing and the toe in is off. Bump something with a wheel and the toe in is off. Anything from a bent steering spindle, drag link. wearing in the front axle, wear in the drag links, a slightly tweaked frame, wear in the sector gear bushings, and the tires will face with in or out, and sometimes to the point that you can't steer will backing up.