So one day things are going great vapin away. Then all of a sudden my cool carts just stop working on my auto bats. not just one all of them. the WoWs work fine and the cool carts work on my manual batteries but not the autos. i made sure to tighten them down all the way thinking that it wasnt making a good connection but that didnt help. with other carts the autos kinda whistle and are really airey. Im thinking the post sunk down in the batts?!?! I want to know how to fix it but im honestly not sure what to adjust. any help?