A good friend of mine recently got a copy of the Sigma 30mm 1.4 from Abe's of Maine on sale. He had a horrible experience with them, but disregarded it since it was a good deal. He ends up with a copy with crazy back focus! Now, he just placed an order on another one from B&H. Apparently he doesn't want to deal with recalibration nor Abe's.
He tells me that he's going to send B&H the copy he got from Abe's of Maine if the second copy turns out good. I started telling him that I assume B&H would mark down the serial number for that specific copy of the lens! He wouldn't believe me! Is that true guys?