Avon Seasport 360 Deluxe- One inflation valve ?

[Dune]

That's all I can find on my new to me used Avon Seasport 360...one on the starboard side. And yet when starboard side is inflated, port is still needing lots of air....but nowhere to put it in.... what am I missing ?

 

[Scary]

Trying to remember

look behind the seat back under the engine well.

 

[Dune]

look behind the seat back under the engine well.

Ah...sure enough....in the dark, high up where it's very hard to see...it is there, problem solved.

What amazes me is NOWHERE in the extensive manuals (2 volumes in multiple languages) does it mention this little tidbit of info.

Also seems odd to have one valve inflate 2/3's of the boat but the second one inflate 1/3.

Thanks !