: Don,Some older, gravity style toilets require a larger volume of water to refill the bowl. Try the below tip and see if this works. If not, please e-mail more information about the toilet tank, including ballcock model. Maybe I can trouble shoot a little more.1. Check the water level in the toilet tank and make sure the water shuts off at the water line, if it does not and you have a float rod, bend it up so it does shut-off at the water level.You may not need to replace the ballcock.]Good luck … Wen