@scottpascoe Sorry to hear the first one failed. I had mine done in 2011 at the Silverstein Institute in Sarasota Florida by Dr. Seth I. Rosenberg, MD. I had no issues and the thing is still working. I was living in Southwest Florida at the time and the husband of a friend was a retired ENT and recommended I go up to Silverstein Institute in Sarasota to do the procedure. I think they were also training doctors in this procedure at the time. I have since read that the number of cases of otosclerosis is not high so it is not easy to find an experienced surgeon. In the beginning it was catch up so doctors had the chance to acquire more experience but now who knows? But I had my procedure done, my hearing improved immediately and I had no complications and it still works. I also liked the Doctor. Here he is listed in US News (link below). I don't know where you live, they might be able to give you the names of ENTs in your area that they know do this procedure. Best to find someone experienced!
https://health.usnews.com/doctors/seth-rosenberg-495637

@scottpascoe I had mine done at Mayo by Dr. Carlson. In addition to otosclerosis in that ear, I have an acoustic neuroma (tumor in my vestibular system) which typically knocks out the hearing.. I believe the stapes surgery was successful because my hearing was a little better in that ear after the stapes was replaced. It's been about three years and I still have some hearing remaining in my impacted ear. Best wishes to you!