calmloki
Give me a museum and I'll fill it. (Picasso) Give me a forum ...
Really not understanding the inability to just replace the drain unit as a whole. Weird old thread pitch/count? Crossthreaded? A cutoff wheel gets the remaining attached bits out of the way and you just add a new shiny drain. This will require exposing the bottom of the shower so you can attach the new drain to the pan and downline pipe, but still a whole bunch less effort, time and cost compared to redoing several bathrooms.
I resist job growth. Keep things simple.
I resist job growth. Keep things simple.