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- I'm a Fish!
the science is actually the exact same way Apeks has been saying you have to put the HP seats in for years and years. If you follow the DST manual to the T it is never an issue on the install, the problem then becomes when you actually use it after a few dives they can start to give.
I should mention that they do breathe quite well and I am generally happy with them, replaced the mouthpieces with Comfobites, because that is probably the best thing the Aqualung group ever invented, and the fact that they have a lifetime warranty on the metal parts that has no requirement of services means that they really do believe in their product and they do stand behind it. That for me means that some of these quirks that we have all been having are more likely growing pains and manufacturer issues rather than those with the product itself. I can get over that relatively easily, and as a tech diver the QAQC issues are less of an issue for me since I don't have to pay to have them serviced.
I am 100% with Garth though, if the HP seats were available separately, then I would be 100% on board with them and while I'd probably keep my Poseidon second stages, I'd pop an OPV on the firsts and dive them because while the Mk3 from Poseidon is quite possibly the best first stage ever invented, the environmental sealing on the Apeks style first stages is that good and that means a lot to me since my regs see lots of sand and grit in the caves.
I should mention that they do breathe quite well and I am generally happy with them, replaced the mouthpieces with Comfobites, because that is probably the best thing the Aqualung group ever invented, and the fact that they have a lifetime warranty on the metal parts that has no requirement of services means that they really do believe in their product and they do stand behind it. That for me means that some of these quirks that we have all been having are more likely growing pains and manufacturer issues rather than those with the product itself. I can get over that relatively easily, and as a tech diver the QAQC issues are less of an issue for me since I don't have to pay to have them serviced.
I am 100% with Garth though, if the HP seats were available separately, then I would be 100% on board with them and while I'd probably keep my Poseidon second stages, I'd pop an OPV on the firsts and dive them because while the Mk3 from Poseidon is quite possibly the best first stage ever invented, the environmental sealing on the Apeks style first stages is that good and that means a lot to me since my regs see lots of sand and grit in the caves.