That's not a spelling error as the 's in this case refers to possessive, not plural.
You know, like saying "Samus's power suit" or the like.
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I figured you would just re-post your original post from the "Mirror moon insertion" thread which, to be honest, was a much better post. Let' s just say that the wording used in the above-quoted post makes it much more likely to be ignored.
I'll just quote your original post for you then in hopes that Quibi and/or Alyinghood see it: