your post probably got overlooked in this section. First thing you need to check is did you remove the plastic plug from the caromizer before you screwed it on. Next look at the label on the cartomizers, some of them had the labels applied too low and it covered the slots cut in the bottom, that restricted air flow, just trim away the lower portion of the label. Try a new cartomizer, does that one do the same thing?
On to the battery if your problem isn't solved yet, look below the
threads, there are three small pinholes, make sure they are open (use a pin) and when you screw the cartomizer on the slots at the bottom will either expose or cover a pinhole, more open means a more airy draw.
Let me know how its going.