I have a lot of spare B and D parts, but I doubt if I have what you're looking for since I believe they supply only one in each kit? Anyhoo, I'll have a look!
Another possible alternative would be to tape the surrounding area over (tracing the outline of the wing light opening and simply fill it with c/a (superglue). Fill a little at a time, and finally sand over and polish with a sanding stick. Mind you, I have NOT done that specifically on a B, but have done something very similar. It works, but be patient and diligent, especially with the sanding part!