I am having the very same problems as this user. I have a aspire nautilus mini on an eleaf istick. I bought my whole set up in Imperial ,missouri last dec. 2014. I love (loved) it. At first it was great. I bought my first package of replacement coils(aspire) when I got back home in Phoenix,az. Thats when problems started. Coils were sticking inside upper hardware, and completely coming apart when i tried unscrewing it from upper hardware. Does not screw onto battery, it stripped threads inside hole of battery.I also am done with it, and keep having to spend money. Thats why I (thought) I bought a very good brand instead of going cheap. I am so done with people that should hold true to their product and reputation passing the buck and blaming others for their faulty products.Nothing is perfect, so when there is someone bringing that to your attention, you should stand by your product ( if it is a good product ) and replace them with another product (exchange one for the other). Because word of mouth and letting people know, such as Facebook that your products are not worth buying would not be good for you. I will have to buy another setup, and I am sorry to say it will not be an aspire nautilus.