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My new corners arrived a couple of days ago. I've not fitted them yet as the current ones are still working fine. They'll sit in a drawer until I need them.
 
I ordered some just in case, but for now, my corner pieces are just fine. I was a bit concerned when I read all of the comments on issues with the Dodocase holding the iPad or the pieces coming loose, but I've been using mine for two months, removing the iPad occasionally, and I have had no problems.
 
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