Motor acting weird on my quad

I recently acquired a 450 build from someone on the web and one of he motors is acting weird and keeps me from flying.At low throttle, the faulty motor is going faster than the others and as soon as i push the throttle a bit more, it jerks and slows down. It also becomes hot very fast.Now, i would hate to buy a new set of motors and then find out that my ESCs are the problem.The build : 450frame with 1400kv motors, 30a ESCs and a kk2.0 controller.

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  • Have you tried redoing the ESC calibration?
    • Yes. Esc and acc calibration. I even reset the board to factory settings.
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Dec 3, 2020