I recently got a 901 from iesmoker. It came with 4 prefilled cart w/reg. flavor. When I first tried it, it wasn't too bad, but left a weird after taste. It was like I just drank apple juice (which I don't like). So I put it aside and ordered their sample set (10 flavors). I got them today and was excited to try them, only to be hit with that yucky after taste still, and not really tasting and other "flavor". I tried the Coffee, and it ended up tasting like burnt chocolate apple juice (YUCK). Also tried the menthol and got a minty a.j. So my question is, is this bad juices, a bad e cig. or just a "breaking in" period of the atomizor?