Front Seat Head Restraint problems of the 2010 Mazda MAZDA3

The driver seat began to wobble back and forth while driving the car. The problem is due to a sheet metal piece (approximately 1/8 inch thick) that holds the seat bottom to the seat slide adjustment. The spring retainer had popped off the locating pin allowing the sheet metal to bend and the pin to come out of its retaining hole. I attempted to replace the spring retainer, but the sheet metal snapped due to work hardening. The failure mechanism appears to occur because the sheet metal is stamped during manufacture and a hole approximately 1/2 the width of the sheet metal is punched through the the sheet metal drastically reducing its strength. I purchased a new slide mechanism because Mazda does not have a recall or special service program for this failure. However, when I examined the new slide mechanism, I discovered that Mazda has significantly redesigned this part to prevent the type of failure that I experienced. The new piece does not have the punched hole, but instead has a reinforced boss as well as significant amounts of welding to ensure the piece cannot bend or break. My guess is that the new design is at least 100 times more durable than the original design. Obviously, Mazda considered the old design to be substandard. I believe that this should be the subject of a recall to verify that the seat retention has not failed. This is a safety issue because the failure results in only 3 points of retention for the seat and the driver can possibly lose control due to improper restraint in the seat. I can supply pictures of the new design and defective design if you need them. There are two such pieces per seat so the possibility exists for both to fail in sequence creating a more serious safety issue.