I came up with this mount since it seems that the first and second designs were going to have some issues printing on the Micro. This design should hopefully allow for easier printing on the Micro.

I would recommend at least low infill as the tolerances should be fairly tight. If you run into any issues with printing let me know and I can revise the model. Pictures will help me to change the model.

I also included a complete assembly that has both mounts included and each mount individually if you want to print these individually instead.

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Got some feedback that the mounting slot was a bit to tight so I added a few thousandths to the model and also reduced the size of the nut holder as it was .05 to over sized. I left about .01 clearance of wiggle room and increased the top and bottom slot and mounts to be slightly thicker. I left the old files in a zip file (Slotted Micro Mount Rev1.zip) and the new files have Rev 2 after them.