A green plastic "railer" came with my new 2-6-6-2 and it works like magic. Maybe some of you have known about these all along, but this is the first one Iv'e seen. I don't remember seeing these for sale separately anywhere. Can any of you give me a source for these, I want at least two or three of them and I just can't afford three 2-6-6-2's. Thanks----------John