The bottle has come loose from the threads. How do you get it tight again? Do you use a thread locker? I've tight it up once but it still leaked out over a day. Or do I just go to my local dive shop?
Hand tighten is fine. I would replace all 3 o-rings the big one where the bottle threads onto the adapter and the two on the adapter. That's how I fixed my bottle related leaks on my old HP.