In short, we've tried everything we can think of and are about to pay the big bucks to call a plumber.
When we used the allan wrench, it made the blades squeak- don't know if that means anything. I think it got jammed from some fibrous substance (juniper incense). The allan wrench turned freely, but it was just squeaky...
I would be so grateful for your advice. Thank you.
Pooket