1.   A dirty looking dark ring keeps showing up around the drain opening and it keeps coming back after I scrub it off.

2.   A. The stains are the result of copper in the water, or the copper pipes, leaching out and being deposited at the drain opening.

3.   A. Those pop-up covers usually sit on the drain opening, with metal-to-metal contact, and even a well-seated one will eventually lose water.

4.   Byrd struggled to stay on his elbows and shift from side to side until his body slammed into a concrete drain pipe opening, Brown said.

5.   Next, pull up the drain stopper and pull this, with the connected linkage, out from the drain opening at the bottom of the tub.

6.   Place the plunger in the basin so the cup covers the drain opening, then fill the basin with enough water to cover the cup.

7.   Sometimes, the drain opening is rough, creating the poor seat.

8.   Sometmes the flapper does not seat properly because the drain opening is corroded, or has a mineral buildup on it.

9.   This could result in sucking water out of the trap, thus allowing noxious sewer gases to enter through the sink drain opening.

10.   This will smooth off any bumps to give a fuller contact between cover and drain opening.