For whatever reason, reversed combustion mixture recipes overproduce product, for instance "Hydrogen to combustion mixture (520 C)" recipe originally produces only 40 combustion mixture units, while GDIW reversed recipes with same input values produces 150 units.
For whatever reason, reversed combustion mixture recipes overproduce product, for instance "Hydrogen to combustion mixture (520 C)" recipe originally produces only 40 combustion mixture units, while GDIW reversed recipes with same input values produces 150 units.