I have an issue with the faucets in our master bath. They are manufactured by American Bath Factory and they come out of the wall over vessel sinks. Here's the problem....., I tiled behind the vanities and now when you screw the spicet part on the pipe sticking out of the wall it bottoms out on the tile before it is tight on the threads. My question is will that brass nipple unscrew to be replaced by a longer one ( I had a plumber rough-in everything so I don't remember what it looked like and now it is behind the sheetrock) ,or is there something that can be put on the threads, or do I have some major demolition to do? Thanks in advance,Randy