That happend to me when I first got it. and its getting worse. i'm just going to get a cp asa or something. My tanks are fine, however the last thread on one of my tanks (thread closest to bottle ) is quite burred now i have to de burr it.
It seems this happens because at about 3/4 of the way in you are screwing it in against the pressure in the tank. I guess something has to give.
That sucks! I didn't have an issue with the my 3000 PSI Pure Energy tank. I wonder what the difference is...threads on the Crossfire REG? Of course the crossfire is a 4500 PSI tank I wonder if that makes a difference.
it really doesnt make sense why smart parts wouldnt just make there asa better, but whatever. Even the ion asa is better than there on/off.
your going to have to either lube the tank every time u put it on or get a new asa.