Hi All, in another thread I highlighted the problem of gimbal twitching. What this could possibly be? - Video with occasionals random gimbal bumps Well Amazon sent me a brand new P4 to replace the one that was supposed to be defective and guess what? Same problem! I made the same tests I performed on the defective unit. 1) vertical take off, camera fully down -> Will generate most likely a twitch on both P and Sport mode 2) vertical take off, camera fully down - stopping the drone on air - C1 for reposition horizontal -> will generate most likely a twitch 3) switch from P to Sport -> will generate most likely a twich some seconds after the switch Have a look at the video DJI 0001 res 720 it comes straight from the SD card without any editing, check it out at those time: 14 20 1:05 2:05 2:45 04.19 07:45 07:52 7:54 Of course before flying the new unit I did firmware update followed by IMU cold calibration followed by gimbal calibration. Now I am like an idiot with 2 drones at home (the replacement + the one I have to send back to Amazon) and I don't know what to do. I already wrote to DJI and I will keep you posted on the outcome, however it wouldn't be a bad idea if P4 owners would help with testing on their birds in order to determine if this is a software or hardware issue.