So that settles the Swastika on Heinkel-issue. They can't add it, so they leave it empty, so the community can add it - if they want. Mystery explained.
Here's a thought - imagine being in the Heinkel fuselage (gunner position etc) and looking OUT through the bullet holes.
And then imagine a hurricane crashing into the fuselage just behind where you were standing, cutting off the whole tail section with its wing. Such nice air conditioning.