I appreciate the input, I might be obsessing a little bit, but that is my personality.
DivegirlFWB, thanks for the article and I did and do recall reading that. I am guessing this must be the case in combination with the hose wrapping around. I was shoring diving so there was no issue with boat staff or someone else attending my gear. I am thinking that I turned the tank on but did not turn it fully, I had my buddy check my valve before going in as I could feel that a hose was wrapped up on something, and they indicated they cleared the tangle and everything was fine. I am wondering if a combination of, tank not on all the way, pulling on my hoses before going in to get them organized, and some of the motion while swimming was enough to restrict the flow.
I just did a little test with my regs hooked to my tank and the hose for my primary reg is pushed up against the valve handle, if I moved the hose back and forth it would move the valve handle, not a lot, but it moved it. I have since re-configured my first stage and the line to ensure no hoses are rubbing. The other night while diving I also took a 40cu pony bottle to start seeing what that is like, might be a nice thing to carry along, especialy on deeper dives.
Latitude adjustment, I have never seen such mermaids in my diving, here everyone is heavily clad in neoprene, pretty much leaving everything to the imagination.
Ken, funny I was not looking at her feet at all, but I just went back and chuckled. When we hit the surface the guy I was breathing with said it took 4 turns to full open the tank, it was not closed, but not open all the way that is for sure. One of my other tanks has one of those indicators that show if open or closed and you can tell if open all the way or only partialy. It was on the tank when I bought and never really payed that much attention but it is a nice visual reference.