Been a while since flying my tello. I notice that one of my motors (CCW front) is getting hotter than the other 3 motors and im not getting 5mins or more of my flight time, from 90% battery take off down to 70% of about 2mins. My question is, does the hot motor affect flight time and will it be the early sign that the motor is near its end? I dont have any replacement yet. thank you.