Drone motors have too high kV, will never work properly as a gimbal motor unless you rewind them. There’s a reason why all drones use one type of motors for the propellers (fast rpm) and another for the gimbals.
OlliW years ago (Can’t believe it’s been 10 years) had great tutorials on gimbals, various types of motors and how to make things work OlliW's Bastelseiten » Mikro Brushless Gimbal V3.0: Das kleinste 3-Achs 32-bit Gimbal