as ive said before 90 degrees on the servo and 8 degrees pitch on the tail blades towards left (8 degrees gap between the tail blades) center all your trims and set your travel adjust to 100 percent. trust me, the moment you do this , your heli will hover very straight with equal throws on left and right. you can ask an experience pilot who sets up the heli correctly, this is how they do it. If you have the money, i would buy the gy520 this is far by the best gyro or the spartan. procey, but this gyro centers itself and very adaptive. If you set your heli right especially the tail, you're heli will fly very nice.