The motor is sensored, and therefore it probably won't work properly with a sensoreless speed control. Everyone keeps saying things about the speed control Yes, it will operate a sensored or sensorless speed control but it doesn't say anything about a sensored motor working with it. All of his issues he's described are classic sensor issues. More than likely the motor that he got won't work without having the sensor wire hooked up properly, which is impossible on a sensorless speed control. Just because the speed control will work with any sensored or sensorless motor doesn't mean the motor will work with any sensor or sensorless speed control.