Thanks Wojtek, that's saved me a job! Any chance you can do the same for the front of the cockpit, where the 'solid' part curves down instead of up? I'm trying to explain that this part should form the coaming or shroud over the instrument panel.
I was going to do some sketches later tonight, as I seem to be having a problem saving any thing in my drawing software, but your stuff, using the model parts, is much better.