My understanding is that the intended bonding adhesive, Tego-film, was in short supply due to a specifically targeted bombing mission. The missing material was replaced with an ersatz adhesive which proved corrosive for this and the Ta154, alike. For want of a nail . . .
Really great video, if you are open for some advice i dont know how much editing it would take, but you should consider giving the demonstrations you give on the test-flight on some gameplay. You mention no turn fighting, you could for example, show what happens when you try to in some gameplay. I also love the history introduccion in the beginning Keep up the good work man