I need two rollers replaced in my attic loft pull down staircase - the big ones on the picture. These drums have tension spring inside that helps to pull the stairs up and down.
The mechanism is quite similar to sectional garage doors but garage door contractors I have called would not even go past "oh, we only do garage doors"
Where would I look for these parts? Or for a whole new rope system if nothing else.
(I have no idea who and when built that staircase)