I think i may be being thick, as I'm not sure i get the question.
I've just taken the locking plate off and can't see any gap between between the carto and the tank, and there's no wiggle room if that helps.
I have seen somewhere one of these tanks where the o ring literally wasn't there, so it's not beyond the realms of possibility, but other than the really long locking plate, mine has been golden.
I think maybe I have one without a O ring but tbh looked like there was one, basically the carto doesnt touch the O ring (assuming there is one) and as a result wobbles about, just trying to find out why mine leaks badly
got mine today.pre punched sr carto..primed using condom method,placed in agr and connected everything up.filled tank using needle,tightened screw.vaping like a good un ...on the vamo its greaton udt not so strong so some lr's are required i think
I popped my centre pin, which made it so NONE of my kit made a connection as apparently the O ring on the vamo isn't the greatest... fished it out with a paper clip and seems to work fine with smaller threads now though
For those who are having leaking issues, it is only because the carto is not fully in the base properly. I found that out when I put a filled agr on my stand and came back 30 mins later to find it was empty, silly me I hadn't made sure the carto was properly sat in place. I have 2 agr's no problems since.