After I enlarged the drawing onto the canvas, I realized that I no longer had the compositional format of a steelyard, with the large mass of barns slightly off center balanced by the little shed at the far right. When I added space between the larger barns, I no longer had that format. I had barns in decreasing sizes from right to left. Not very interesting and a poor composition.
So I wiped them out, reversed the two front barns. What you see now is a 3-spot composition with the larger one near the center, receding on the right to the mid-size barn, and then back to the little shed on the far left.