Needless snarkiness aside, the Smith stock design defect is understood
http://www.picturetrail.com/sfx/album/view/17090409
http://www.picturetrail.com/sfx/album/view/20576154

My very well used 1906 12g 00, 1906 16g 0E, and 1908 16g No. 2E do not have cracks in the head of the stock however. A 1908 16g 00E did crack the left lower stock finger.