After meeting with Ed, the copper smith, and studying some pictures, I came to the conclusion that the holes cut in the bottom portion of the cover were most likely not identical to the top portion. Because I didn't have an original bottom portion to copy, I had to ask a favor of Alex Beamer, who is currently in the process of building a 1911 Model 63 Stanley. He was kind enough to send us numerous pictures and dimensions of his cover so we can proceed with the construction. As suspected, the holes for the valve and piston rods are offset towards the bottom. Thanks Alex!
Blog
A blog about my the history, acquisition and operation of my 1911 Model 62 Stanley Steamer.