Hi there all, I wonder if anyone can help me here;

I have just received my replacement Caberg Trip in the post, but have noticed that it doesn't have the small deflector/ draft excluder under the chin that my old one had. 'No problem' I thought, I'll just take the one off the old helmet - but it too is missing, must have come off in the accident.
So - does anyone have one of these laying around in the bottom of the box that their lid came in that they are not using?
It's just a small curved flexible piece of plastic (like a sort of flap) that is about four or five inches long that must just clip into the edge of the rim under the chin.

Many thanks.