defective bumper mold?

redrider

I recently hit a game bird while travelling out-of-state and it broke one of my fangs and went along for the ride in my grill for 200 miles.
I have had an OEM replacement bumper ordered 5 times and each time it arrived it had a very shallow divot or depression about halfway between the passenger headlight and the Nissan badge right at the top lip of the bumper that is 2-3 inches across which causes a warped reflection.
I finally went to a Nissan dealer and found that 3 of 4 new 370z's on the lot had the same divot. Does anyone know if this is a defect in the mold? I'm guessing there may be quite a few Zs out there that were bought with this anomaly.