this mod suffers from a serious design flaw. If you don't make sure that you have a battery in the tube, and an atomizer on the top cap fully threaded onto the tube BEFORE you screw the switch housing onto the mod, it will be nearly impossible to get the bottom off. Also, Aethertech provides zero customer service, or even a response to emails. All of that aside, I do want to showcase the awesome work done by JoJo at J's Plating. He is a jeweler, and can get your mod looking new again. The switch assembly was absolutely destroyed (dented and scratched to hell), as, like i said before, it is nearly impossible to get the bottom off of this mod if it gets stuck. I had him plate the top cap and bottom switch of this mod, and he polished the tube for me as well. If you need a mod restored to what can be considered better than new condition, send him an email.