Maybe I'm doing this wrong but I have noticed more often than not when I unscrew the bottom of my nautilis mini the coil stays screwed into inner tube part. This means I have to unscrew the coil and rescrew it into the base again. This gets messy and takes more time than I would like. Am I doing something wrong? I have found nothing that compares to the mini as far as I'm concerned with the taste and throat hit but it's a royal pain in the rear to fill.