We have a home that had stone siding put around it about 35 years ago. The stone is soft and flaky (which is from the type of stone it is) and the concrete that holds it together is crumbling in some places, although it still looks nice overall. I was wondering if we could save it somehow. Also, some stones are very crooked in one part. I was wondering if there was a way that the stones could be removed and placed back in?