Very interesting Paolo, you need to send photos of those boxings to Jeff Garrity of Rare-Plane Detective because he has taken over the PAK-20 book updates, as none of those appear in the 'Big Book'. I think he would be very interested in them, especially that F-82 boxing -- 
Do you mean Garrity has taken over updating the book, or that he's just selling the old updates?
I have studied Pak20 quite a lot. Unfortunately, maybe because California is nearer Japan than to Europe, it appears (to me) that there are a lot of errors and/or omissions concerning european brands, and even more in my main interest: models form 1/87 to 1/100.

Even if Garrity is rewriting the book, I'd have to maintain a continuous stream of infos and photos for a while, I am afraid

Pak20 even affirms (page 11) that Trumpeter's An-12 is the same as KVZ/Plasticart!

(only about 30 years between them) and ignore the Revell reissue of the Tamiya B-52 (a big one to miss

)
DISCLAIMERS:
1) I don't have the updates
2) my comments don't mean I don't appreciate the enormous work done by Burns, I reckon it's impossible to discover and list everything, and many of the kits and brands he lists are very obscure (to say the least)