Constant drift towards left

Hey all !
Hope you all had safe landings! I am stuck in a loop where my multirotor is constantly drifting on left and I did account for the offset w.r.t to my IMUs as I have mounted the FC at rear section of the bird. And also the flight controller alignment to 270deg(as shown in the picture.) Am running on Px4 - 1.16.0alpha.
NOTE: I am using MTF - 01 MicoAir tech but the drift is happening in Stabilized flight mode and even in position flight mode.

  • I would like to know if the IMU offset should be done with respect to the IMU (on the FC) and the CG of the Aircraft or should it be considered with respect to the CG of the aircraft and the center of the FC.