When I remove the top mounting screw on the side of the door, the rollers do not come out on either side of the door. It appears that another screw on top of the rollers is holding it in similar to the 10-32 hole on your 81-157. Looking from the bottom of the door, I can see the threaded end of a screw that appears to be holding the roller in, screwed from the top. How can I gain access to that screw to remove it?
I can't find a manufacture name anywhere on the door.
