Well I haven't totally abandoned mine yet, but it is definitely on the way to being a dust magnet.
Constant Spitting - I prefer to
vape my
juice rather than drink it
Leaking - Either I get it over wicked and scorch the cotton and have a poor draw, or I under wick it and it leaks
Air Flow - I prefer more airflow that it provides set at wide open
Connection Issues - I constantly have issues with the bottom pin making a good solid connection with the
coils. Causes
the Ohms to jump around a bit at times. One hit it will be .5 couple hits later it is at .9 then it hits .3. Yes I
checked all my connections and thus found it was the center pin to the coil
RBA - TINY!! I know that really isnt fair as you can only fit a certain sized RBA in the tank, but I wish I had room for more
substantial coils in it when i build.
Muted Flavor - with my DIY fruit flavors all my drippers taste the same, but the Sub tank mutes them to much.
Filling - This is a pain. I get one good tank with no leaks, then I have to refill. take it off the mod, flip it over, unscrew
the base, fill with out dripping any juice in the chimney, reassemble and hope it wont leak. This is when I normally
start getting dry hits.
Unpredictable Dry Hits - Normally first fill is good. Then I refill it and every few hits are dry. TC has helped, but it
annoys me to no end that it happens.
Im sure a lot of this is do to me being semi-inept, but this has gone on for a year. Either there is something Hokey with my STM, or I just aint gonna figure it out at this point.
I just got a TFV4 and I fear that it has sounded the death Knell for my SubTank Mini. Flavor for days, airflow that I almost have to turn down a touch, easy peasy to fill.