An additional quote from the "letter never sent" (except to the OIG).
Only an Engineering change could be done now to allow the discrepancy. As you likely agree because you are unbiased in this, my arguments (on) this...were bulletproof. But that doesn’t prevent corrupt personnel from doing an end run around those obviously factual arguments and gunning down the person who made them, "murdering the messenger," as the messenger himself is obviously not bulletproof.
The Last Inspector