So I have a full size legacy which I LOVE! With this legacy I also purchased a Kick and extension for use with an 18650. I love this setup in theory but this thing pisses me off! Once my batteries get down to around 3.8v the kick starts its "studder-vape". This is 3.8v with no load so I have no doubt that under load it is less. I know that according to evolv's kick instructions it says that it starts the studder-vape once the battery reads 3.2v under load. I've got no means of testing these batteries under load. It just burns me up because after the first couple hours my vape quality turns to crap due to this studder-vape. Off the charger my batteries show 4.2v. When this kick works it's perfect. Unfortunately that isn't near long enough in my opinion. Any help or guidance? Am I doing something wrong? Do you think my kick may be defective in some way? Thanks in advance!