My 901 is only about 5 days old now, but im not having any issues with vapor, mine seems consistant. Finally go rid of the "burnt" taste i had for a day(THANK GOD). But other than the burnt taste im amazed at it.
I think after using all these that your true solution to the problem is to go with something like a screwdriver, etc. A good mod device that has a larger battery,
I am not ......ed... I know how to smoke...I have been smoking for 15 years!!! I might swallow something else but not cigarettes.
I appreciate the suggestion, though I'm curious whether the screwdriver you are talking about has the same atomizer as a 901.