i'm started with arducopter 8 months ago , and it's neve goes fine.
Today i replaced new motor's and props and i can't go up
the same issue like some months before
copter goes to back ar backleft.
4 x KD2217 motor
4 x 10x4.5 props
ESC are calibrated
Direction of props ar OK
i have a video :
and also add the log as attachment
please can someone help