Hi Mstapleton,
Dear member of SanDisk Community, welcome.
I commend him, for his generosity, to transmit their knowledge and experience.
This is very important because it is a flaw in the “quality control” and you’ve discovered and put in evidence, of manner very attentive.
Please, like this is the Forum Users , and for that Engineers of SanDisk can take note, of its very important observation, I request if you can, direct your message to SanDisk Technical Support: http://www.sandisk.com/about-sandisk/contact-us/
Regards, Alfred. (Google translated)