First off, congrats on the new Tx, you are going to love it. And no, the gyro settings do not correspond, well not like you are thinking. Each number on the DX6i equals 2 on the DX9 (0-100 vs -100 - +100). So 17.5 would equal +35. But I tell everyone to start out at 40 to 45 and if you get a fast wag, just lower by 5 points until your wag stops.