A few years ago, oh.. I think probably 6 or 7 years ago, I fixed the plumbing of this toilet in a rental I owned. Or so do I think. This is the downstairs unit of a two family house which was built in the
1940's, it not earlier.The lead bend on the waste pipe was leaking. I removed the toilet. Chipped out a portion of the mosaic tile foor to get to the lead bend. I did not remove the lead bend completely. Just saw cut it and left a stub hanging out from the branch of cast iron stack. Then I wrapped the stub with a rubber connector with stainless steel straps and connect the upstream end with PVC pipe and bend. I took the opportunity to retile the bathroom with 8x8 ceramic tiles also.
Six or seven years later tenants are complaining the toilet is difficult to flush. But the rubber connection I made still hold as there is no leak. So after eating turkey I am going to remove the toilet to see what may have caused the plug as the tenants have gone home for the holiday.
Anyone has this experience or care to speculate what I may find?