I use two of these bodies in my working arsenal and can tell you
that, thought they're not a mono-piece of magnesium alloy like
the single digit bodies I also have, these D8xx are very well built
and sturdy cameras. I had no problem of any kind with them and
they are used intensively — but with much care — in my work.
Without seeing your gear, my first recommendation would be to
have it checked by Nikon.
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