Aluminum Sliding Glass Door Rollers

I need to find the roller that will replace one worn and one broken roller on my sliding glass door. It is probably 30 years old. I couldn't find any markings.
I will also need a small track cover. 80-102 I think.

These rollers (81-082) fit my Arcadia doors 700 series in my Acorn Deck House perfectly.
My doors did have a second pair of rollers in between these rollers but they seemed to be an attempt to override/repair door.