Vision clearomizer

[Jamiestevenage]

i have 5 of these they all zap flavour & give minimal vapour. i have tried different flavours vg/pg mix and theres a problem every clearomiser, every juice, i notice the ones i have i got from LF there is below the mouthpiece a long silver pipe that goes into the seal and into the mouthpiece. on the device in this video, Review of the Vision Ego Cartomizer (Stardust) for Electronic Cigarettes - YouTube, it has no silver pipe, can anyone shed any light on this and let me know if that is the culprit, or if there is another reason why none of them are working for me, im having a bloody nightmare lately, 6 packets of crap boges and 5 dodgy visions, seems a bit weird as everyone else is in vaping heaven, im even tempted to pull out my old e cig with the orange prefilled cartos..............thnx xxx