I noticed that the regulator that Couv is trying in this picture (with a DSV type mouthpiece) is my original Argonaut, one of the original four. I wanted him to try/test the mouthpiece.
This was in Cozumel, November 2014.
That same regulator was in Cozumel in 2012 and 2013.
It was under the ice in March of 2013
It was chromed in April of 2013
It was in Roatan, Honduras, in May of 2013:
It got new cans in November of 2013 in Cozumel:
It was in Bonaire in May of 2014:
In September of 2014 it did 46 dives in the Philippines:
Notice in this picture in the Philippines that in my normal swimming position my tank slope is just under 8 degrees. That regulator is touching my back and at 8 degree slope it will only move about 1/8" vertically for every inch that it moves down my back.
Between all this dives trips it has also done a lot of dives in the cold temperatures of Maine (and a few in Tacoma, Washington):
I am using the same original regulator in all the pictures above.
In all this dives the regulator was only serviced once when I took it apart in March of 2013 to have it chromed. Since then it has been operating perfectly and I have no intention on servicing it for several more years.