Hi folks, I have been working my way through the tutorial for X10 Premier.   A couple small errors in the text have come up that I slogged through, but I have come up to one that is a bit more on the serious side: Creating the front porch, I have tried my darndest multiple times to follow the instructions to a T, however when placing the porch steps, the steps continue to be placed without an opening in the half-wall. The top stair looks to be lining up a couple inches below the bottom