I've heard stories of "unfired" 99s having tang cracks. No, not necessarily a deal breaker. On all my 99s, or 1899s I generally take a deep well socket which is 0.050 smaller than tang radius and wrap with 100 grain sand papaer and GENTLY rotate to create 0.005-0.0010 tho clearance from tang to wood. This area should not be weight bearing during firing. And, as prolly previously stated, DON'T over tighten butt stock retaining screw.
