I know it's there to counter out the torque for the main blades, but how. Does the tail need to have some pitch to keep the heli straight? I'm asking cause I took everything apart to change the gears, and don't remember how it was. If there wasn no pitch there would be no lateral thrust generated, just centrifugal force. Is that what keeps the heli straight? Or is it the thrust from the pitched blades. I have the Walkera 22d and it spins very easily. I have not been able to Hoover at all. It won't stay straight. Can I replace the gyro with a head holding one? Can that be done? I have no idea how to adjust the gyro. I just realized it's possible. I've had this thing for 3 months with plenty of down time, and still no control. What type of cable to I need to hook my Transmitter to the computer to try a simulator? Thanks Alot. I'm learning slowly but surely.