I have a Nemesis clone that I use as my primary device lately. I'm wondering how in the hell the bottom pin unscrews itself all time. I have to screw it in a few turns about 2 times an hour. I'm not familiar with Loctite and don't want to mess up the switch but think a non permanent form of that may work. Any suggestions or experience about this issue would be cool. I use flat top 18650 batteries and the atomizer is always secured with the top pin. Never any battery rattle. Just a bit perplexed as to why it unthreads.