I think there was too much spoiler-y talk this week. This is almost twice as fast as my first solve. MechA=5 could be possible with indirect debonding or something. But.. lots of people were lamenting about getting their solution to run to completion, or that they take up a lot of area. Why would that be? Waste atoms, I bet! Right, because with scaffolds and indirect access, even MechA=3 could be a possibility. But I couldn't figure out how to actually pull it off. Great.