Two simple toilet flapper questions
1) If, when you hit the handle on the toilet, the flapper opens but fails to stay up and falls right away causing the water to stop flowing, is that a sign the flapper needs replacing, or is it a chain adjustment?
2) It's always bugged me anyway! Is there a "science" to the chain on the flapper, or is it simple trial and error? My handle rod has three holes, and of course the hook can go through any link in the chain, so how do you know where to put it without flushing the toilet a dozen times until you get it right?