I know this has been mentioned in other threads, but I need advice on this problem. I'm a recent convert to vaping and have 4 batts. Three of them have a very hard draw. I've heard of sticking pins in the holes, but that hasn't helped. Any other advice on correcting these problems, or am I stuck with buying new batts?? At this point, the only pleasurable vaping comes from the one that draws well. And of course when the batt needs recharging, I want to smoke! Help!

