Thanks for your comments Paul. I spend more time building molds than I do making parts, so sometimes, even when I know my procedures, I forget some important steps, such as making sure that the resin, when pouring, gets into the small nooks and crannies. That is the nice thing about a mold, you can always make another part. I have made molds for smooth side, and fluted Pullman Standard passenger cars, including a boat-tailed observation, a dome car, an eF-7, a and b, an E-8, a and b EMD locomotive, working diaphragms, and now the heavyweight car. Bob.