Thank you
A bit more progress

I have rigged the cockpit interior, this time using small diameter steel piano wire. It's the right colour, stays straight and is available. Makes a mess of your cutters though.
I've been worrying about the interior details because I have no details. I am having to make up what is there based on the pictures of the Nieuport IV that I have. This means that I'm mostly inventing what is in there, which is rather uncomfortable. Also, I think I have got the seats too large again. I've decided to stop worrying about all this and carry on, otherwise I'll never finish this build
Anyway, with the wind shields in place, you can't see a lot of the interior:

Oh, I've closed up the rear of the fuselage too and added the board behind the cockpit. The IV has this, and I've seen images of the pilot standing here on an X, so I have included it
Richard