Hi, recently I was flying my plane, and upon landing it, noticed smoke coming out of the left nacelle (2 engine airplane). I immediately unplugged the airplane and once I was able to tear open the bottom of the airplane, learned the ESC had caught on fire. I just now replaced the ESC, figuring the other one was cheap and getting old anyway and when I was testing the motors, saw that the left motor wasn't spinning, just jerking irregularly, and the ESC was getting hot, so I unplugged it and was fiddling around with the connections and prop when I realized theres a weird amount of resistance in the motor. I have no idea why though, it's weird. I now have it mostly disassembled, the bearings seem to be working and the shaft isn't bent, so it seems like some type of magnetic resistance, however this occurs when the motor is completely unplugged, and I can't figure out why. I assume this is the cause of the ESCs getting hot, as it's feeding the motor current but the motor isn't using it because it can't spin. any help is welcome and thanks for your time.