Are these issues more likely in the 14650 models do you think?
I ask because I have the 18650 version and have had little to no problem with it at all. I think I've had the unit for nearly a month now and it's become my main all day P.V. Problems I've had so far: paint work is terrible, chips off just by looking at it, I've since taken all mine off and don't mind the slightly bronze metal colour I'm left with. A G4 clearo simply wouldn't work at all on it. This wasn't really a big deal however as I've found the G4 pretty useless on most devices...
I've found it to be pretty consistent with the 18650, batteries last me a good two days and I really only notice any drop off in vapour within 30mins of a battery going flat. I use a array tank with CE2 XL insides and that's it. Real shame some of you are having issues like you are, I really am impressed with my £40 battery mod personally. Sure it's a bit cheap and you know build quality pales next to a silver bullet or provari but then they are far cheaper to buy, yet performance is impressive all the same.