Crashed my P3 Advanced this afternoon after getting a little too cocky with it. Now, one of the motors is very stiff. It can be spun by hand, but not freely. When turning the props on to test, it will start to spin but then stop. After 2-3 attempts it will not even try. No ESC error or anything indicating the ESC. I know it is rare for motors to fail, but could it be a motor issue? I guess my real question here is, do I replace the motor, or do I ship it back to DJI to have them fix it since it may be a mainboard problem? Thanks all.