As the photo depicts, William J. ("Brud") Snyder is in a bit of a tight spot. A "free-lance" carpenter from Kinderhook, N.Y., Brud had the good fortune to get the job of hanging half-inch CDX plywood on the gable end of the building on the right. Besides the sliver of a workspace, we asked Brud, were there any other problems? Plenty. For starters, it seems the building wall on the left isn't a gable end. "Until the gutters were put up, it made for kinda wet work with all the rain we had this spring," he reported. Then there were the nails. "We used warm-dipped, eightpenny box nails, and they're tough to nail even when you've