I'm working on designing a model of 1046. I am using CAD to design it before I build. I am having trouble finding the dimensions of the tenders of these engines. Specifically, how much does the tank overhang the frame rails and how tall are the rails. In addition, I cannot find the dimensions of the end sills. I am visiting family in Tulsa and Saint Louis this week. Are the 4500 or 1500 class tenders similar enough I can measure one of them to get a good approximation of how to build a pacific tender? Any other dimensions I should pull while I'm at it?