in the cen forum someone had a batt problem and the failsafe didnt work. i would recommend putting a throttle return spring on. i put one on mine the other day for just such an emergency.its for if in the event that you loose the batt, the throttle return spring will overpower the servo and return the engine to idle.i used a spare that came with the savage but you can make your own. the home depot in the lawnmower sec or inthe hardware sec have springs just cut them to size.