Im so glad that people are mentioning the fact that cartomizers are not actually supposed to be wet on top. This drove me nuts for months. I kept trying to keep them wet and thought there was something wrong. I heard this about the tops only about a week and a half ago. What a relief.
Another carto myth is they should be lasting weeks. I know there are some that do get a weeks worth but what we rarely hear are the details, such as light vapors, those that vape about a ml a day or those that use real thin juice ; high PG juice. Also certain juices are just harder on cartos, not necessarily heavy VG, but organic tobaccos with naturally extracted tobacco. They just seem to have more particulates ? Also the dark juices, those real amber almost black juices, clog up cartos. I have some real lite juices, the golden or almost no colour ones and I have been able to get a few days.
BTW. I have been playing around with different hole configurations. Ive tried everything, again this was when I thought the top was supposed to be wet. I now have 4 holes along the bottom; 2 larger holes and 2 smaller holes , spaced 1 lg, 1 sm etc. and then one real fine hole up higher on the carto. I got a great new carto punch that gives me the finest, least distortion that I have found. I got it over at VIP :
http://www.vipvaporcig.com/accessories/cartomizers-1/aluminium-cartomizer-punch.html, a bit costly, but the precision of the holes and the clean hole I get is worth it. I was using another by Siam Mods, but the screw kept getting dull and holes were coming out larger and with more distortion.