Proxmark being weird

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This is the configuration I’d recommend without the mid-board:

Proxmark3 Easy Case and modification

Thanks to @DonFire 's excellent guide I got my Proxmark back up and running. Since then I’ve been playing around with all of the things I can do with it. One of my main concerns with the board was the lack of a proper case. Knowing me, I was bound to short something and make the device more brick-like than my botched firmware update did. So I started designing a case for it and while I was thinking about the design I had a realization. The middle PCB is barely useful. It raises the LF antenn…

I’m not sure about the screw sizes, I thought they were all the same