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I was hanging out with the Giant Stride group. I've dealt with Red a few times though I don't really know him well personally. I know a couple of people in the OCA group as well.

Or, as somebody else mentioned, by the time the boat gets back to the dock, and I get lunch, 2 or 3 hrs have passed, and I'd feel safe going into the hot tub unless I had been really pushing the NDLs for a few days.

Yup.

Yup

The common blue/pink one is cobalt chloride.

The desiccant itself is not (very) toxic, but the color indicator that is most commonly used, is.

IMO, there's nothing wrong with taking 15 sec to try to resolve the problem before making the decision of whether or not to continue the dive. If a deep breath fixed things for you, then continuing was ok.

I was there, so may have seen you there...

Yes, increased bubble load is generally considered to be an issue, but some believe that lots of fatty tissue is also a risk factor independent of the bubble load. DAN believes it to be a risk factor even though it hasn't been medically proven.

Those studies may be true, but DCS and bubble formation in the lab aren't the same thing, so they're not testing the same end point.

Cleaning a Saber 28's hull; the one that I crew on during the summer racing season. No suction cup, though; I either grab the keel/rudder/etc, or just fin to stay in place. Burn lots of air for only being 6' down ;-)

Home made dry gloves: buy some insulated vinyl-coated waterproof gloves from the hardware store, and glue dry suit wrist seals to them. Instant dry gloves, and MUCH warmer hands...

The normal term for that is failsafe.

On a cruise; PADI OW certification was one of the "shore excursions" that they offered. OW dives were in Grand Cayman and Cozumel. Edit: Then did a refresher/intro to local diving with a local instructor whom I already knew.

Yeah, that's the manual I've been trying and failing to download; I'll try later tonight. From that detail drawing you posted, it's hard to see how a single piece of anything could block the air flow, but I would want to see the surrounding pieces before making a conclusion.

I can't get the drawing to download, so can't check on this stuff myself, but my theory was that if a small piece of the shutter broke off, it might end up blocking the air flow path, held in place by air pressure until something changed enough to knock it loose. However, it sounds like you're...

Depending on the construction details, temperature changes and the resulting differential expansion of various parts, can cause a valve that is opened against its back seat to be very difficult to close. Of course the same thing can happen in the closed position, but those changes aren't as...

I haven't looked at the drawings, but would it be possible for a piece of a broken shutter or spring to block the path that the air needs to flow?

I didn't realize it at the time, but afterwards, the fact that I couldn't find a water bottle in my BC pocket made me realize I was narc'd. This was during the Deep dive of my AOL cert The next time I went that deep (and actually to 134) in the Devil's Throat in Cozumel, I was consciously...

Wait until you're in salt water. At your weight, you'll need 8 - 9 lbs more weight to stay neutral than in the pool