you will go down to just 2 units possibly one but you gotta have a back up just incase! i dumped 3 extra mods when i got this thing the dood got a deal form me cause i really really wanted map tanks! it is used all day every day if it broke id use my BB of coarse as my back up which i really dont like cause it doesn't fire all the time which pisses me off u gotta really hit the button to make it fire but the provari fires every time and almost instant i LOVE that feature!
I think I'd only go down to one when I quit vaping. You know..... In a glass case that says "Break in case of emergency". That ONE PV would likely be the ProVari.
I don't have a BB but I can sympathize with you. I have a sawz-all that's doing that. Very annoying and in this case, a little dangerous to boot.