I recently bought a used Spyder Imagine, and at this point its not working. This is my second one, my first one also had unforeseen issues. This gun only works when a 9v battery charger is plugged into it. When the 9.6v battery charger is plugged in or when nothing is, the gun doesn't have the power to fire. The trigger makes this slight tick noise that it's trying, but its not quite strong enough. My guess is the guns not taking the charge. I've tried switching out the 9.6v battery, I switched out the circuit board with my old guns, and I've tried the two different charger. Any suggestions would help, or any questions to help towards a solution would also help.