Argento loose thread

[mzal]

I recently purchased an Argento and i think its great. I did notice when i got it that the ego type connector on it had a bit looser thread than all my ego batteries but this never seemed to be a issue as all my cartos and tanks screwed on ok. Unfortunately now the thread seems to have got worse and some cartos and clearos will not even screw down, its as though the connector has stretched. The ones hat do screw down just slide past the first few threads and only tighten on the last couple of turns. I have never over tightened anything on it or cross threaded anything and i always remove whatever is on top of it before i put it in my pocket so I don't know how it has happened. Has any one else had this issue or got any ideas?

[lazydog]

they are made of a soft cheap metal the easy fix if this happens is use an adapter and leave the adapter screwed in.
It does not help as everything is made to a tolerance in this case it could be + or - .5mm so if the connector is at the upper limit i.e + .5mm and the atty is at the bottom limit i.e -.5mm the overall size difference will be 1mm so you can see where the problem comes.