If you're going to be powering a 333oz/in servo with a receiver pack, I hope that you have lots of them. It's going to be kind of funny when you realize that you're going to have to stop running every 15 minutes to charge your receiver pack. Well, 15 minutes might be a bit of an exaggeration, but I'm sure that you get my meaning. Those super high torque servos suck some current and what really sucks is when the radio switches off due to insufficient voltage and you had just pulled full throttle a split second before.