I have 700 wall hung American Standard toilets in the building "prison" I work in. At any one time a dozen of them are leaking from the wax ring/neoprene. In the past we'd change out the gaskets and it would work for a while. Some of the fixtures that were really bad we tried loosening the no hub on the drain side of the carrier and forcing the short nipple into the wax ring. That did the trick on several of them, but I have one that is still leaking. This problem child has the carrier mounted a little farther off the wall than any of our other toilets. When weight is put on the toilet you can see the carrier flexing much more than any other toilet I've seen. If anyone has any ideas to stop the leak please advise.