Something to consider with first person accounts. Not only may the tellers memory be a bit faulty, it may be 100% accurate BUT the information told to/received by them all those years ago may NOT have been 100% accurate. What happened to a pilot (or mechanic) may have happened just as he tells it. WHY it happened, or the tactical/strategic (or even supply) situation may not have been as he understood it to be at the time.
AS an example many BoB pilots may recall when their Spitfires/Hurricanes were refitted with constant speed propellers in their squadrons, they may not know when the testing/approval was done or when the propellers were actually ordered. Some of them were not out of flight school when the constant speed propellers were tested and ordered. Yet there is a "legend" backed up by memories of the pilots/mechanics of the Propellers being fitted at the last minute (ok, a few weeks) before the BoB started. The Pilots (and Mechanics) are right, the Propellers were fitted just a short time before the Bob but the actual work (testing and manufacture) started many months earlier.