Our Toto CST414M started leaking through the ceiling of the room below. It was installed about 9 years ago. We can't tell how long it had been leaking, but not much of the ceiling seems to be affected. We pulled the toilet and discovered that the wax ring had not been properly compressed by the original installer, so it should have been leaking from the start, all over, but that was not the case. Installed new wax ring and wax ring extender, reassembled everything, and when flushed water just poured out of the ceiling below. This water now seems to be coming from the rough in connection, however. Is there some trick to assembling this particular toilet that I am missing? We can't find any information on this right angle rough in any place on the web. I have installed quite a few toilets in the past, but this one has me stumped.
Last edited by a moderator: