James, I think it's going to be a question of putting a search on ebay and waiting. It's not even listed on Modellbaustudio Rhein-Ruhr, which is Classic Planes' shop.
I put a gloss coat on the Fokkers today so decided to have another look at this. It's been sitting in front of me while I've been working on the two Fokkers and I kept thinking something wasn't right...a day or so ago I figured it out...

The fuselage halves aren't symmetrical!
I thought about it and came to the conclusion that there was only one way to put it right....cut it in half!


a little light sanding on one side, some plastic card "lugs" in the forward fuselage to help alignment, and we now have this....

Much better! I have applied a little filler around the join and will let that dry thoroughly before any further work. I also think I'll reskin the rear decking as it really looks pretty crappy, especially now it's been chopped in half!
Thanks for looking in,
Ian