I have set up my PX4 with 4 motors. When I arm and lift the throttle the motor attached to MAIN1 starts first, lift the throttle slightly higher and MAIN2 and MAIN4 also start up. MAIN3 does not start unless I move the right contol lever (that controls direction) to the top left.
I have tried ESC callibration but it doesnt change
I have tried setting PWM_MAIN_MIN3 to 1100 and 1300 but no change
I am set to manual flight mode
Any help would be appreciated