You shouldn't use the servo to adjust the throttle opening. It will die when you hit the brakes. But sweet deal that you got it working. Better safe than sorry. And the high torque should be harder to return over a standard since it probably has a deeper gear reduction. But, it may have a more free gear train and motor allowing easier movement. Like these BK servos for example, they are ultra smooth and easy to move. Way easier than any other servo I have had my hands on. So smooth!