Thanks Marwan

. I didn't necessarily expect any response (although it's welcome of course), it is an informational thread.
SinglerM, I think the moulded side badges are newer models. No, there is no recall. The old ones generally work fine I believe. In fact, I think the older version has a more solid feel & sound. Although I wash my gun after each use, I did encounter some unusually rough, gritty entries last year - a lot of sand suspended in the water when I first entered the water. I usually dive in murky water (I'm worried that my new 75cm gun might be too long!

).
I wouldn't worry about it unless you start getting problems, as I did towards the end of last season (see above list of symptoms).
If it happens, you'll know it. They'll probably continue to refine the mechs., so you might as well wait until necessary. Having read this forum for several years, it seems most owners never have a problem. The RAs have a long warranty period & even after that, you can still buy the mechs. at reasonable a price.
[I suspect that guns with the optional stainless steel spear-line release will not experience the loading problem, because of the extra weight & smoothness of the hook].