I've finally managed to export an internal model mesh that I'm reasonably happy with. It will be all hands on deck for the FS Biff in coming days.
Anyway there is much work still ahead for the Biff. I now have to tidy the cockpit up a bit. Rework some textures, uvmap and animate the internal model, and convert the CFS3 LOD's to FS2004. Also I have to animate the instruments. More on that as I go along.
It's nice to know that I can now move ahead. Now for that celebratory glass of fruit juice LOL.