Hi Ray.
If you take off the outer wing sections you can hard point them back on using the wing root elements on the E/G.3dz. Then you can treat the outer wings as separate 3dz's mapped to their own textures. To save any RS problems, you can delete all the crap, 255'ed elements and dud nodes, recalc the RS and Normals, which is easy with so few elements.
The tail sections can be joined and cleaned up as with the wings, except you'll need to put in a bulkhead element where the ailerons start.
Doing these little jobs will make a better model, and it will then work in Glide without the problems the Mossie has.

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Ah that's much better!
Wings Over BytomAt home, with my great kids, Thomas, Jessica & little Nicola.