The problems in county here are actually similar to the previous pinch and raw filling.
We tend to think that if an aircraft is going to crash. We need to push the throttle hard to save it.
This caused the aircraft no quickly fly up into the sky at the beginning and during the flight the control ability of the throttle is actually poor.
I don’t know how much to push it exactly. As a result the aircraft goes up and down during the flight.
But in the party’s process, I no longer do peach and roll but use the method of pushing the throttle separately to fill the changes between throttle and altitude. Thus gradually one can achieve a basic mystery of the throttle.