I have to say that I think SM got the door cylinder lengths wrong. I think the nose needed a long cylinder and the mains could have used the short cylinder. I've racked my brain to make them work perfect, but they are just barely closing and I think that in the sky they will not have enough force to stay shut. I'm hoping for a boundry layer effect!!

I will maiden my F-4, likely next week. I'll be posting some video.

Raf