Build Log – All Props Are Not Created Equal

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Can you guess what the problem was?  I feel a bit foolish, but realized after much fussing and tweaking of settings that the kit contains two kinds of props:  clockwise ones, and counterclockwise ones.  I had three out of four correct, merely by accident, but once I replaced the errant one, I took the quad out into the night for just a basic spin up.  Result:  the roll problem is, of course, gone.  Foolish though the mistake may have been, I’m reporting it here in the hope that someone might stumble upon it and learn from my errors.  Tomorrow, we fly!