Aligning a 993 should not be done without Porsche's special tools (9549 an 9550) for measuring and setting kinematic toe on the rear axle. It is very possible to set the rear camber and toe with resultant "quirky" handling since the multi-link rear suspension is designed to change toe when cornering, it is essential to use these tools. They they are essentially curved bubble gauges that clip onto the wishbone and toe control arm and ascertain that they are parallel to each other. It is imperative that they read within 1.5 scale units of each other.

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