Just wondering about something. I first ordered 24mg strength cartos and found them to be fairly strong, but not quite enough for me. This last order, I went to 36mg on two sample boxes (10 cartos). They are all labeled with 36mg (also the boxes), yet seem to be weaker than my 24mg were. Does mislabeling happen much? I haven't tested all of them but I have tried 4 from the tobacco samplers (2 menthol and 2 regular) and so far....they all are weak. This was using the USB passthru, if that makes a difference, but I tend to get a better hit from the passthru in any case.