A poster on another forum stated that the tupperware versions can crack at the seam of
the injection molding.
Some say tighten the bolt too tight, wood stocks can crack. It only stands to reason that
if the bolt is too loose, recoil can be a real crack maker. As for me, I must have done
something wrong twice, for I am in the process of repairing my second wood stock.....
one, a laminate, and the second is factory walnut. The laminate has received some
wicked recoil since its repair and is holding very well, so I'm hopeful the walnut will be
stronger than original, also.