They aren't exactly consistent or precicely placed on the screen used packs so you don't have to worry about them being perfectly spaced.
Basically, they should face towards the center of the cyclotron on each ring if that makes sense.
They were drilled and tapped with M3 or 4-40 UNC threads
Thx! Been a while since I saw all these photos.
Correct link: https://imgur.com/ynDfWUc
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