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A lovely piece of work. Back in the early 1970's I had the opportunity to fly both the MFI-9C and the MFI-15. At the time, my company was interested in importing them into the US. The planes were great fun to fly and I am happy you've chosen to produce this fine looking model. I can now look forward to some day recreating my Malmo/MFI experience. By the way; along with all the other good ideas expressed here, you might wish to consider lighting the compass. Best!
Very nice sir! Have you programmed everything already?
Yet I suggest to add a bit of damage at the cockpit's sides, so just below the canopy. Most likely, pilots will enter the plane there and so hit there with their shoes. Put their hands there, so it might be smudgy.
Also, add a few scratches at the walls next to the rudder pedals. Add a bit of wear to the carpet at the floor, where the pilot's feet stand or move at the pedals. So: lightened areas