TL/DR : The custom games "Crashed Red Ship" "Alien Planet" "Earth Planet" (probably the rest too) have assemblers with capacity of 1000L which is the 2015 definition of the assembler. Current assemblers are 4000L. Why are the old definitions still used? I've been playing the Crashed Red Ship custom game and added two more assemblers. When checking inventory, I saw the capacity wasn't the same across all three. Loaded up other custom games and found the 1000L assemblers on those as well. Why is this a thing? I've been designing a save game that was intended to check the various settings of most blocks to note things that don't look right, to detect potential problems like refineries overproducing now. This concept is useless if the block definitions change but the old definitions are still kept in builds, unless I completely tear down every test case and rebuild it every release.