OK, so my new CA sportline isn't shooting. I pulled the trigger a few times when there was no battery. I then put in the battery (after recommended Charging time) and it shot great. I did about 15 shots on semi auto, then switched it to full auto. It shot about 5 times on full auto, then just stopped firing. When i would pull the trigger, it was doing the same thing it did when the battery WASN'T in. The Gearbox didn't cycle or anything. Please Help!! Do i need a new battery? i believe its an 8.4v 1200mah battery, nunchuck configuration.