I've seen plenty about the opposite problem - maybe this is something less common: my toilet flange is above the anticipated floor level. I recently removed old tile from the bathroom floor, planning to install new tile. In so doing, I discovered that the old tile was set on about 3 inches of thinset/mortar - which had effectively built up the floor 3 inches. Now once that's been removed, I've got a toilet flange with a base/bottom approx 3 inches above the floor boards. Once the new concrete backing board and tile is placed on the floor, I'll probably still have a couple of inches of flange protruding from floor level. Is there a safe way to push the flange down into or towards the drain somewhat? I haven't checked for sure yet, but I think that it's a straight (unbent) flange - unless there isn't such a thing. HELP!

Thanks,