My father explained to me that if I replace the flapper inside my toto toilet I will get a little extra water and a better flush. Current flapper has a hole on the nipple part and he said if I get one that does not have the hole I will get a little bit of extra water making a better flush. Sometimes toilet cloggs and figured this might help but before I go threw the hassle on 2 toilet I would like to know if he is correct. Thanks for any help