So anyway I got into vaping with a basic ego pen. I recently upgraded to a kangertech Subvod pen. I've been loving it especially how easy is to use and the excellent flavor I get (yeah yeah dripping is better). But I've been having issues with unscrewing the clearomized and actually getting down to the coil. Like the top of it has little notches so you can unscrew and fill from the top. But I can not for the life of me get this thing off. Maybe someone here has had experience with this particular pen and can help me.