Sometimes you gotta just jump in and try. I've got a box with mistakes in it, we all do. The hardest part is getting the razor saw cuts straight without cutting yourself in the balance. It's also hard when you are making a locomotive from photos, especially one as old as this one is. I had a bunch of parts in my parts box, and one day as I was looking for a part, I picked up these pieces and said, "hmmm, this looks like a C-430!" and the next thing I knew friends were telling me, "BUILD IT!". Hey, what's the worst thing that could happen? It would end up back in the parts box. Now I've got a pretty good start on a locomotive I've always liked that was never offered in plastic. You can get a brass one if you can find it and if you have $400-500 dollars, or you can build a Tiger Valley version with the rough zamac castings and the driveshaft through the fuel tank, and I hear they sound like a Waring Blender full of ice cubes when running. Don't be afraid to tackle a project, if it comes out right the feeling of acomplishment you get is great.