Ahhh Ha !! So that's how it's set up to work. Thanks for that little tidbit !!

I don't remember hearing any "click", but I did have to push the waterproof flap down some, to get it flush with the face of the unit ... so I may not have seated the card in as far as it can go, before closing the flap.

I may have to try the push in - push out method, just to see how much "ummph" the spring has, so I'll know before trying it on the water. Thanks again for the warning.

... cp