Problem Adjusting Toilet Fill Valve
I have a relatively new toilet fill valve (the kind that is adjustable by screwing it either clockwise or counter-clockwise). I have been trying to adjust it to add more water into the tank, but nothing happens when I screw it either way. What could I being doing wrong; it seems so simple? By the way, the reason I'm trying to add more water to the tank is because the bowl doesn't empty on the first flush, and sometimes not even on the second flush. Any suggestions would be great. Thanks.