One physical check that must be done to ensure your AVR drone hovers properly is to verify that the motor positions and rotations are correct. We previously covered ESC wiring which should ensure that the FC output is going to the right motor.
We discussed motor rotation when installing the frame arms and learned that the rotation for each motor is important. You may recall the image below and we will refer to it one more time before we run the motor test.
Motor position and rotation diagram
Motor positions and propellers installed with the nose of the AVR drone pointed forward
The video below will walk through the necessary steps to run the position and rotation test.