I put this on the toilets forum but didn't get any replies, so I'm trying this one. I have a two-story house with three toilets, two upstairs and one downstairs. Not too long after we moved in about 29 years ag0, one of the upstairs toilets ceased doing complete flushes. Had a plumber come in, couldn't fix it, so went with replacement. Since all the toilets were kind of dated looking, I replaced all three with the same Gerber toilet. In the ensuing years, the same issue occurred again in the same bathroom twice more (i.e., toilet initially works "ok" and then gradually peters out). Note, the other two Gerbers in the other bathrooms are still doing fine. At least two plumbers have investigated and come up with no ideas on what's going on. Any ideas from you all?