Did you ever find a solution to the old return jets? We have a pool built in the 80's with fine threaded 1.5 inch metal return eye jets. I recently ordered 4 new ones and they were nowhere close to fitting. I can't find anything on the web to order some new ones and have no idea of how to replace these jets. If anyone has a suggestion it's greatly appreciated!
Moderator Note: This was split off this old thread: Old Pool Return Jets