I’ve heard that Rav Dovid Goldwasser is an expert on that. Unfortunately I don’t have his number. Anyone have it?
I have no clue what Rav Katz knows about ED but its probably worthwhile to try him again in a little while if you don’t get thru to another rov soon.
Hatzlacha Rabba and I wish you a year of good health and that you should be able to fully overcome this disease.