Writerly help

I need a new online critique group. I'd like one that focuses on Middle Grade (or MG/YA) novels exclusively. No stories, no picture books, no non-fiction.

Anyone have such a group with an open slot? I'm (mostly) a nice person and an excellent editor.
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Updated: I am also willing to form a critique group, as I've heard from someone else interested in just the same thing. So send me an e-mail if you're writing MG/YA fiction and want to be part of an online group.