It's been a while since you posted the request. Can you verify for me whether you received one of your pair, and which one you still need? I'm guessing you still need a Meloetta, and I have a few I can list and offer. Two I believe have excellent stats, but I'd have to clone them as I haven't done so with those ones yet.
I also have a Lv.15 Meloetta that is Japanese and the first Meloetta available, and another Meloetta or two sitting in Black right now, not counting anything in W2.
You might be able to get both of those from me. I have yet to trigger my Uxie/Mesprit/Azelf, or to get Zoroark in W2 (for some reason I want to try to clone that one first so I can send one to Black), so those might be useful there, esp. since I can use Zoroark in the post-game (I have a Lv.70ish one sitting in my Black as I speak).