I finally made it to the dealer to have the drivers seat fixed due to excessive front to rear play. The mechanic that performed the repairs noticed immediatly that soemthing was not right as he drove the car into the garage. The mechanic replaced the entire seat adjustment unit with a new one which solved the problem, work was completed in about 45 minutes. I asked the mechanic if he could show me what the problem was. Apparently the unit was poorly built, rather than part(s) failing. Several large rivets used to hold pieces of the mechanism together where not pressed on tight by the machine. Large screws that connect to the motor units for adjustments have nylon guides that had excessive play indicating possible worn nylon guides. All in all the unit was loose rather than broken, with tolerances not normal in other seat units this mechanic has worked on.