Find KatherineOfSky at: https://www.youtube.com/c/KatherineOfSkyGaming Belts on left indicate end-game size, so leave space. Combinators show what products go on which belts. Upgrade Steel Chests to Buffer Chests, Iron Chests to Passive Providers, and yellow belts, etc. to reds, then paste "Mid-End Game" BP over the top. (Make sure you go to Settings > Interface > Alt-mode, and check the box next to "Show Combinator Settings" to see the items on the combinators)