This is an excellent discovery after you two did a huge amount of research.
I know you've a stack of helmets you've acquired to research this part. Many hundreds of shekels in old junk spent money on trying to work this one out.
Thank-you both for spending the time and money so we don't have to.
I know you've covered it in your build thread, but maybe you could edit post one here so everyone understands what has been accomplished here.
Wonderful