[SpEEdyBL]

It's possible that the rotor is out of balance. I had this happen to my 380c 9t. It must have been whacked out of balance when the motor fell apart in bad crash. When my 380c 9t began to run hotter all of the sudden, I did some inspecting and found that the rotor was way out of balance. The epoxy was now on the wrong side of the rotor. Even when I rototed the epoxy holding aluminum plates 180 degress at the ends of the magnet, the rotor would still roll to one side when placed on a table. The shaft wasn't bent, but somehow the distribution of mass inside rotor must have changed. I don't know if this is the case with your motor, but it did make my 380c 9t run quite bit hotter. Be sure you rule out your esc first though.