在 2009年5月21日星期四 UTC+8下午11:47:51，c_shah写道：
I replace my 20 years old toilet (KOHLER) with a new fill value (made
by MJSI www.gomjsi.com) and a flapper. It still leaks..at about 4
hours tank is empty looks like it is leaking into bowl (no water
around toilet area)

At this point I am not sure what could be causing it to leak? should I
try another flapper...