Thank you Gazza, Terri and Rick, new photos are coming...
The birds have some wings now.
As soon as the putty will dry I will file it and publish some more photo.
Then I worked on the radiator shutter on both the models:
BLUE MAX
EDUARD
Here I used just the PE rectangle because the handle was horribly flat, to give it some thickness and insert a 3Dish handle, I inserted a flat piece of plasticard and made a hole.
I also had to raise the two side rails to "let the slider slide".
In both cases I made a ring where the handles slide as seen in many photos on my references.
Thanks again for your attention!
Antonio