We live in a Cape Cod home with a one car driveway. Along the side of the house were rotted wooden steps leading out of a side door. I'd like to replace the steps with some limestone block (2 slabs). The foundation where the steps would go has some cracking and is out of plumb less than one inch. I've taken care of the water issue but I worry about the heavy steps pushing the wall in further. Is this something to be concerned about?