I ordered a CE4 to try out, and I'm not having much luck with it. When I first screw it on a batt I get a few good hits, then nothing. Not dry hits, just nothing at all like it's not firing. I tried switching batteries, pulling pins, etc and it just keeps doing the same thing...2 or 3 vapes and it dies until I unscrew it and screw it back on again. Plus, I just got a mouthful of juice on one of the "dead" hits, and I don't draw very hard at all. Any tips, videos, etc around for these yet?