The earliest of the ICD were stocked up with improperly dried & layed out lumber. They knew it but time constraints or just plain ignorance made the project push forward with it.
It caused the forwarned problems of warped stocks and gapped inletting. Some stocks were redone in an attempt to better their appearance and fit, but only so much can be done when starting from that point.
As is usual in most projects such as this, the push to get pieces ready for the displays at the SHOT show and other well attended shows made some poor decisioned short cuts in the first guns made.