I saw this on another forum and thought you'g guys would be intrested. As we know the steering on the Z-cars is'nt exactley sturdy so this guy made some bushings from metal tubing to take uo the slack. He had to enlarge the holes in the plastic steering arm to accomidate the bushings.. He also added the rare earth magnet.. I guess youd have to use non-magnetic material for the bushing. Perhaps you could fashion some with plastic?