Mostly it’s moving from the 4 Refine/Constructor factories to the Assembler factories, and making sure that any of the lines don’t get backed up. Lots of moving items from one side to another, programmable splitters move things sideways, smart splitters send specific items to the Assemblers. Takes a bit of fiddling to make sure things go to the right spots, but so far it’s working very smoothly. A couple of the Assembler factories aren’t running at 100%, turns out the Copper factory is backing up, when that’s redone I’ll be making sure I’m not overloading any one sorter belt.