I've returned to this thread because, when I posted a reply before, in regards to the picture, not looking as though it seated properly, I now seem to have the same thing, picture wise, after buying a pair of Grey Ghost Amphibian Headphones. The collar will not go any further, and it's tight. Plug is seated tight, O ring is good, not cross threaded, just looks like stefs picture with what looks like a gap. These Grey Ghost are made for the AT, CTX3030 & MX Sport. Just the nature of the beast? Waterproof connection, I hope.