You are very, very welcome - it makes me very happy that it pleases you! Thank you for the opportunity to stretch myself. I have written Flitwick before, but no Death Eaters other than Severus (and I've never tackled that period of his life, either), so this was almost a very different story!
But, as I was looking over your character list, I remembered the almost throw-away aside that it was Flitwick who took down Dolohov. And when I began thinking about all of the other details we know from canon about the two of them, the connection made itself and the story just fell into place.
Yet, you had me so invested in Antonin that it became peripheral. That is about the nicest compliment you could have given me! To know that I had you that emotionally connected to Antonin really makes all the fretting and hand-wringing worthwhile. :-)