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Message: <blockquote data-quote="Alexis Powell" data-source="post: 1267966" data-attributes="member: 5327">I know exactly what you mean about this splitting problem with folding Nikon eyecups (it is the same for many other Nikon binos and Fieldscope eyepieces of that vintage) but I can tell you that using a bit of Armor All will prevent this cracking (for me, at least since 1993 despite much use.  My friends who don't use Armor All have had to replace their eyecups twice over in the same time period).--AP</blockquote>