Hey! I also need Dex fillers from White. I'm currently visiting the move lady daily to collect those Heart Scales, and can hatch any babies you need (as in Black catchables, namely, I'm still working on finishing those then will look for White's). What do you have that is exclusive to White, or even not in the games at all?
I am meanwhile working on many other games so I can import a Shiny Nincada from Emerald, but it's gonna take a LONG time to be able to import that. Until then I'll be curious if the extra Pokémon that comes upon evolving is also Shiny.