I got an idea while looking around at Michael's today. I got some balsa wood and made a few lumber loads for my center beam flat cars. Eventually, I'll take a picture of the wrapping used on the real car loads, and print it out, then paste it on these loads. The dimensions of the loads are, 1/4" wide, 21mm high and 138mm long. The short loads are 15mm high. What do you think? They are cheaprer than the commercial loads, and I'm sure they will look better once the paper is on them.