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Ahhh, got it. The original head had the SHCS glued into the head and then the cam caps slid over them and were tightened down with a nut. For the newest version, just tap the plastic holes and install the SHCS directly into the head. You may not even need to tap depending on your printer. I find that I can just directly thread an M3 screw into them. I am planing on updating this motor in the future to make assembly easier. This was the first motor I did, so some things are a little funky.