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I made a complete disc rip of Tetris - The Grand Master Ace in December 2019, but have a handful of other discs (and one's I'm trying to find) to not only fill out Redump gaps but also proper dumps for many games that are not dumped correctly from scene releases of the era.

That's more or less it. If possible, want to contribute to the Xbox 360 part of redump. I can provide all the documentation required for a redump submission for Tetris if that's enough for an account, I have no idea what sort of qualifiers there are.