although the CLR 'cap' sometimes stays IN THE Air Tube (and is frustrating)
I look at it as being from good design & quality - IMO
to think that--that seal is strong enuff to 'hold'
and the threads are smooth enuff to allow unscrewing
and it is all machined good so not to 'bind' up ; and ALL my ego one tanks do it
(unscrew base, then reinsert and about 1½ turns catches cap threads, ez/pz)
Totally agree in the quality of workmanship, which is why I seem to be amassing only Joyetech products lately. I got hooked on the Ego one mega because of the size; great to fit in my pocket and the battery would last the day. It has become my going out setup. I have the Ego One Vt and 2 Evic VTC minis but to be truthful I've never tried the nickel or titanium stock CL coils that came with units. I have a 5 pack of the CLR titanium .05 ohm coils that I will give a try when I get brave enough to try temp control, right now I'm quite happy just mildly puffing along.