I've been vaping for about a year and half and have had a few tanks and mods so I'm not new at it. Today I bought kanger techs new pro tank 4, and the tank seems to get very hot. It's a .5 ohm in it right now, and I'm using it at 65 watts. Any lower and it doesn't hit very fast, and any higher I seem to get juice in my mouth. Is this a factory defect or am I possibly doing something wrong ? Thanks