Problem with my TT01-E
 

So i put a hobbywing ezrun 9t combo in my car. ever since then my car just speeds up and slows down like 4 different times in the same trigger squeeze. then it just goes at full speed. But if i switch the wires in the esc and motor or flip the throtle reverse switch it works speed wise, but when u squeeze the throtle it goes backwards and vice versa. Anyone have any idea what could be causing ths?