hi can anyone help me ive got throught 2 servos in my monster beetle pro first stock servos al plastic gears dident last 5 minutes so i bought another servo for 50 pound it lasted 30 mins or somot it has got 2 metal gears and 2 plastic ones in side im stuck i don't know if to blow it up or mend it again any help on choosing another stronger servo that wil fit into my monster beetle pro thanks