Let me say I have plenty of ego gear but never tried the ego-c tank system. I just got in an e-roll and I'm loving the tank system. I understand that the e-roll tank system is based on the ego-c type A atomizer with its own special carts. I'm interested in getting the tank system for use on the plethora of ego batteries I already own. In order to use the ego-c tank system with my regular egos what parts do I need and who has the best prices on them ?