Hello FlyGirl950[8D]
I can't see that you've done damage to your pack. But * Battery's like those need to be be run down every time to a certain level before recharge. If your only using 1/2 the power and then recharge them, * They Remember. Run your bird's battery down to the point where it requires 3/4 throttle or so to fly. Then charge it and do the same 2 - 4 times more to get the pack back to normal.
I've had mine since christmas and went to a 11.1V 1320 Li-Po fast as the stock pack only gave at best 12 min's flight time w/o showing off. The 1320 Li-Po gives me 33 min's average hovering and alittle more just buring holes in forward flight. Practice your hovers at eye level and set your trims for best hover, stay off the idle up switch until you want to roll or loop. That will help your power problem alittle.
May The Force be with You!