Ok so I been doing a little fooling around with flying mounts lately, and with the most recent MWCS its made things alot easier. That said, I went ahead and tried the wyvern to epic netherdrake, even tried to get the pheonix to work, but that didnt work out so well for the simple fact that it had way to many files for me to match with the wyvern.
So I pressed on with the Epic Netherdrake, I got it to work, with the black skin and all, but the only thing I couldnt get to work was the wings. So the wings in fact came out kinda white (non texture). Still looks baddass, and its fun to mess around with. Anyways I went ahead and gave a link to download the mpq, and if anyone can come up with a solution to fix the wings, that would be awsome. Enjoy
http://www.badongo.com/file/2169440