Levels 1, 3: Everyone realize there is no rule about not making a ramp for your contraption to slide into the level on. It's fine as long as it stays in the red.
I think it's because the levels are in a .zip. The levels are named "ARFC C" instead of "ARFC_C" because of that. The levels should be at the very top of all the levels I think. Or the very bottom. I don't know.