Something is messing up on my motor or speed control. I have no clue what in the world is going on with it. I have the E Flight 450 and matched 20a speed control. For some reason the motor all of a sudden started chattering very loud. I lost thrust and the plane came down. I picked up the plane and started the motor again and it ran fine. Then out of nowhere it started to chatter and the prop was bouncing back in forth forward and reverse very fast. What does this mean?

I have a new set up and would be very disappionted if a speed control was going out already. I just got done bragging about how easy and flawless the new electrics are compared to how they used to be back in the day. I think I jinxed myself. Anyone have any ideas what in the world this could be?