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Message: <blockquote data-quote="Kevin Conville" data-source="post: 1757734" data-attributes="member: 63161">Let's not create a red herring here. The leap I was referring to comes in your reply to this:Obviously the body of the bin is sealed independently at the focus wheel axles"Actually, it isn't ... that's appears to be the problem.The problem is not so much water in between the focusing knobs but migrating down the concentric(?) focusing shafts and into the main bin housing that compromises the waterproofing.Leica do call this out so don't drop it into water when setting the diopter offset!"I then reply with:"Excuse me but this makes no sense. What holds the dry gas in? Leica claims a 5m (16+') submersible waterproof rating. Are we to believe this O-ring on the cap of the focuser is responsible for maintaining that seal? That when one adjusts the diopter a little nitrogen goes out and a little atmosphere enters?"This goes unanswered."Leica point out the issue."Where is this?</blockquote>