McFlurry, DarthDrk has a point in what he said and I agree with him, but it sounds like your a new pilot like me and don't seem to be doing too much aggressive flying or 3D. If that's the case the pack you have will work for a while.

Your pack has a 10 amp continuous rating. The Axe pulls around 5.5 amps from the main motor in a steady hover. The tail maxes out at 2.4 amps and usually pulls half that in a hover. So you'll be at 7 or 8 amps at most while hovering around getting the hang of things, however resist the urge to go full throttle for any extended period of time. At full throttle the main motor pulls 11 amps which could overheat and ruin your pack.

That's why I say this pack will work for a while. You'll get to a point where your flying will pass the packs continuous amps as you progress and demand more from the heli. Another thing to consider is the hotter a pack gets during use the shorter it's life expectancy will be.

I also have some other suggestions that you may help. If you haven't already cut the main motor heatsink so the the side vents on the motor are exposed. It will run much cooler.

I too used foam padding at first, but found it held in heat as well as the battery so an alternate method might be a good idea. I ended up making a tray out of lexan and taped a bit of cardboard onto the pack to take up the movement.

Good luck!