replacement parts for Ador sliding patio door

My Ador sliding patio door is approx 40 years old. Has gotten increasing harder to slide open. I think the rollers are shot. Haven't taken door off tracks yet to look at rollers. Is it possible that rollers are still available for this door.
Thanks,
Jerry

Where can I see the 81-258 to compare to my roller?

That means removing both doors, pulling the roller, putting the doors back in and waiting for the mail to bring me rollers. Then, taking the doors out again changing the rollers (assuming they fit) and re-installing the doors again. Isn't there a better way.

How much are the 81-258 rollers? Maybe I should order them before I do anything else. Are they returnable if they don't fit.

Thanks

If you have an 82-063 handle, then chances are very good that you have the 81-258 roller. Keep in mind that the original has 5 star shaped cutouts and the replacement ones do not. Also check to see that your adjustment screw is on top of the frame assembly screw. This is The less common case and another good indicator that the roller will work for you. No guarantees, but a fairly safe bet. www.thepatiodoorguy.com

I just used 4 people to lift the door out of the frame to remove the rollers on the ador sliding glass door that I could not adjust the rollers on. I could not find out how to adjust the original rollers but when I got the door which weighs about 200 lbs. Off the track and laying on 4 chairs to look at the roller condition I discovered that the adjuster was a standard screwdriver head in the face of the door about 4 inches from the door side and 1 1/2 from the bottom of the door. The holes maybe covered with a removable cap. See attached pictures. The screw head is rotated clockwise on the left side and ccw on the right in order to lower the roller to keep the bottom of the door from dragging on the sill plate. Hope this helps someone who has the same door sliding difficulty I had. The rollers were not in bad condition at all. A little wd40 fixed them right up. You can get away with not need to take the door off the track.