Thank God I found this thread! I was beginning to think I was losing my mind! I have 6 Nautilus'. Three are glass which I use at home and 2 are SS which I use when I leave. Plus, I have a extra whole SS with all the parts in that crush proof container ProVape sells out in the Jeep (with spare ProVari.) I know all that is overkill but, given the fact I also carry spare batteries in the Jeep and spare juice in a Ican, pretty much no matter what happens, I can make it home without having to stop and buy disposables or BLU carts. Also, if I'm in a situation where I can't travel (concert), I'm covered. Anyways, out of all those tanks, only 1 gives me trouble like you described and I broke the glass just last night trying to get it apart. It ALWAYS acts like this but it's the only one, hence the insanity...
I carry a Leathermans and now, since this trouble, I also carry a pair of 424 Channellocks ($15.61 shipped, channellock.com). They are little 4.5" pliers MADE IN U.S.A. with a life time warranty that fit nicely in my watch pocket.
While I am sorry anyone is having a problem, it's a little comforting knowing I'm not the only one and am going to take these suggestions seriously. The first one being the fingernail under the seal trick.
Thank you!