yea your right, the 4 pack is weak and i had 2300 mah in the truck. i'm going to order some 3800 sub c and make them fit even if i need to make my own pack. well here is the carnage of my truck, o wait there isnt any lol. this a great day breakin went well, bashing went great, and nothing broke. the steering servo i'm using is the stock one, it has 144 oz/in of tork and works great.