their is another thing that you can do , if it will not stop dripping , after you have ajusted it , see if you can get a long plastic tube ,like the one that kids soft drink comes , you know the one that make frozen pops with, long plastic tube , 6inch, long", cut the two ends off , fit it over were the water out of the ballcock are and ,tie it to it, like a garden hose, let the water run down through it , that way you will never hear the cistern filling , or dripping,some cisterns are made like this for silent filling ,
mick
September 2008