I am experiencing an oddity with my ProVari's fire button. Sometimes when I am holding it down to take a vape I notice it is not firing. There have been times I am in the Power Up menu steadily raising my voltage or I am in the Power Down menu lowering it. It tends to happen more when I am chain vaping and hitting the button 2 or 3 times rather quickly (but not as quickly as I would when intentionally entering the menu). Has anyone else had this happen? Do I have an issue I need to contact ProVape about?