I have been vaping for about 2 months now. I started off with afew of the "Nic Stick" 510 kits from my local convienience store and about 1.5 weeks ago I got an ego from madvapes.com. I also got some regular (non low resistance) cartomizers from there as well. So far I have dripped with a regular attyand a modified atty, used the attys and carts and now the cartos. So far my favorite as far as taste, TH , vapor, and convienience has been the cartos. However I have through 3 cartos within this time. I notice after a few days I start to loose taste and get alot less TH howevr I get a bunch of vapor still. I measured the voltage off of the battery with a multimeter and am getting 3.4 V off of it. The only thing I can think off is maybe the carto is getting gooked uop and am not getting fresh juice to the internal atty? Is only 3 or 4 days an average life of these without cleaning? Am I not taking care of it right? I never let the carto run dry. I'm constantly adding a few drops here and there, by doing this is it causing it to gum?