Maybe the company was broken at that moment. They had a labor strike going on and anyone might have dropped a 9V zener in a 6V bin.It sounds like you were working more with a broken company, than broken radios.
That doesn't change the fact that I observed the fictitious re-work room and that room is used to falsify the reliability accounting. That doesn't change the fact that the Military requirements for reliability accounting are absurd in demanding that a production line must operate without a mistake...ever. Maybe that explains the thousand dollar hammer and the ten thousand dollar toilet seat.