The elevator was making excessive noise and I got a quote for them to replace the thrust bearings but when they came to perform that work they 'removed covers and end cap. Found ring has settle worm shaft.'
From the pic I'm seeing the ring definitely looks badly worn...
I'd get a couple of companies to look at it, and to be thourough. I've seen Rings wear and worm shafts brake, and it's not a pretty site. Plus pretty dangerous.
