Update: I received another set of plates and installed them over the weekend. So far everything appears to be working as designed. Hope they will stay that way for a while.
GC provided me with great and responsive customer service during this process (Jay and Frankie), but they really need to improve their procurement/manufacturing/shipping process. I was sent two pairs of mismatched Eibach springs in addition to the problems with my camber plates.
I hope they will learn from the hundreds of dollars they spent on overnighting me various parts.
2011 E92 M3 DCT
1991 Spec Miata
2008 E92 M3 DCT
2008 E92 M3 6MT
2008 E92 335xi