This is likely coming from the people at Michoud, who make the tank. They have stated that the quality control has suffered in recent years.
One supervisor started a reward program for noted discrepancies. They discovered that people were creating discrepancies in order to collect the rewards. Usually a t-shirt or something.
The supervisor stated that "it was amazing what people would do for a T-shirt".
Oh man.......
Did I ever tell you guys that my uncle works at Michoud? I might try and give him a call this weekend.
He's not a high up or anything, but he's been there a while.