when I first unlocked the full auto on the pocket infinity it was really fast and shot out the bullets one after another and just random I start using it in full auto and is a lot slower and theres a lot more time in between shots. its like it has to charge again to shoot. which defeats the whole purpose of the gun. it still works in full auto its just not as fast as it was before and I don't othink its supposed to be like this. has this happened to anyone else and what should I do?