so i had something happen that actually improved my vaping experience. i hadd heard that the end piece would come off the 901 flat/whistle tips and possibly create a choking hazard. well, the latter didnt happen but sometime between last night and today that end piece disappeared from my cart. so i decided to just vape without it and wow! what a difference it makes. i am getting even more flavor and more vaper and barely having to draw. i am not sure if anyone else tried this or if there is a hazard, but i love it. i think im gonna remove all of mine manually before i use them and then there will also be no worries of choking. seriously, i think it could be popped out with a paperclip or one of those screwdrives for glasses. let me know if there are any problems with this and if you have or will try it soon... let me know ur thoughts...