Tarot is a good gimbal for hobby purposes, but not for professional usage. The reason is its micro vibrations which don’t go away. From reading online reviews over last couple of months, it is obvious to me that its a very common issue with these gimbals.
Anyways, if you are looking into Tarot gimbal’s sensor calibration, here is my video which will show you what you need to do. Basically you put the sensor facing upwards while calibrating it otherwise it’ll start acting weird.