Apeks is recalling any second stage or octopus for its TX, ATX and XTX regulators that was bought before July and has not had an authorised annual service. Apparently they incorrectly assembled one, which was subsequently sold. If you’ve got one, they recommend that you take it to your nearest Apeks dealer for a visual inspection before you dive with it again. You can see the advisory on the Apeks website.
I’ve just bought one, so I’d better get that checked.