We are doing some renovating on our home and removed a wall that we shouldn't have. It was a support wall, now the upstairs floor has moved about an inch and is sagging. We need to put the support back into the walls. Can someone tell me what I need to do this. I have heard that you can buy some sort of beam that screws up into the celing that may be able to lift it? Does that seem right? Any help would be appreciated. Thanks