I have a vanity basin and concealed cistern toilet to install. In place if a wall hung basin and toilet in a down stairs cloak room. The only problem is it's a tiled floor and the original toilet has been fit then tiled around. So when I remove they'll be a hole in the floor tiling. The new toilet will unlikely cover this hole, even if I screeded over the hole to bring level with the tiles. Any ideas how to get over this without removing all the old floor tiles and the tilling. I don't think there is. Thank you