What is the Torque rating on the default servos which come with the Hyper 7 PBS, I was out in a sand quarry this weekend and every now and then the servo couldnt turn the steering even though the battery pack was full (6v 1200mAh flat pack). I had to manually turn the steering to free the wheels before it would turn properly. If I got a 100oz/inch (or higher) servo would this problem be resolved? and if so what effect would it have on the power drain? ie how long would a 6v1200mAh pack last on a full charge?.

thx.