Hey everyone, I have a e go c with the replaceable atomized heads, and the ego c twist 1000 battery. I've noticed that after a few days of vaping, the cig gets really hard to hit. Like you have to inhale really hard. When you switch out a new atomizer head, it goes back to hitting really well (easily). I mean the old atomized isn't bad, but it's like they get clogged or something. The heads are rather expensive and I'd rather not go though one every two days or so. I have soaked an old head in alcohol for a day or so, let it dry out and refill it again but they still hit hard. I've ruled out the tanks (also ego c, 2.5 ml) because switching to a brand new one makes no difference in how hard they hit. Any ideas on what's going on with this? Thanks for any info