Long story short, when I got my Riva 901, the throat hit was decent to excellent. Over the course of a week, it fell off (or I adjusted and can't feel it?). I've cleaned the attys, used both batteries including a new one which was a replacement so I've ruled out attys and batteries. I'm using a variety of e-liquids, all 24mg or above. I'm now using a Boge carto and just like with the attys, I get great vapor production, decent taste but my throat hit remains missing since the 2nd day or so. This makes no sense. If it is a matter of having adjusted, I need to find a way to bring the throat hit back. I will pay the ransom!