@User: There was a discussion about this a few weeks back, and I determined that double MiM caps could be stacked; the problem was the rules for double MiM caps aren't in the documentation so I had to infer them from the SkyWater Calibre decks. The most recent version of the magic techfile from open_pdks will not show this error. Is this from running magic DRC locally, or from pre-check? If it's from pre-check, the techfile will be updated soon. . . I hope today.