I replaced my old pink wall hung toilets 10 years ago — my house was built in 1967. My duplex has four of these new wall hung toilets. This one started to leak this summer from the underneath. I called a plumber to help replace the foam ring. They had trouble getting that done, there was still leaking, it got moldy. Now I have a toilet laying on the floor, a hole in the wall, they say that the problem isn’t the ring but the a worn fitting on the wall that the guy is calling a “carrier horn.” From what I gather it is “3 and brass. He says they can’t find one and have to basically replace the whole toilet and suggested there needs to be digging into my slab and opening walls. I live in Anchorage but I cannot be the only person with this problem. Help?