We are in the homestretch of our remodel. A bit of history: I live in Hawaii, the house I live in was built in 2008. The housing track here is concrete slab and the tile on the ground level is laid directly on the concrete slab. The grey color is the tile, not a sub floor and not being replaced, that is the brand new tile. The flange is about 1/2 inch above the tile. We originally bought a Toto Ultramax II and discovered our rough in is 11 1/4 inches, so we will return the toilet and buy one that has 10 inch rough in. Problem is what to do with the flange as we are assuming it needs to be level with the floor?? How do we replace that flange?