Transmission Failure problems of the 2006 Subaru Impreza Wrx

At 3500 rpm shift from 2nd to 3rd gear at low level acceleration the 3rd gear teeth shattered and caused damage to the gearset. 3rd gear needed total replacement and metal debris floating in the casing until car could be stopped. 2000 miles later after Subaru dealership repair and all new parts from the factory the same scenario occurs again 3rd gear chipped all teeth and car needed to be stopped immediately. Both incidents left the car with large amounts of metal debris which not only cause additional damage to other parts but also have the ability to cause the car to lock up and malfunction posing a serious threat to the driver and any passengers. This metal debris was observed in both transmission repairs. Subaru sighted "operator abuse" as the cause of the failure. However a serious design defect related to a significant deflection of the input shaft most likely is the real cause of the transmission failure.