Glass Sliding Door - maker unknown - need rollers

My door has been having issues sliding . .put some teflon spray . .and still not happy. Decided to take apart after watching some videos online. I removed the pieces however, I think there is still part of the housing inside the bottom door track. From the mechanics of what I have in the picture, I am not sure how the door should raise or lower. IM assuming the screw would move the assembly pictured forward and backwards thus using that slanted channel. Looking for new parts if possible?

The part in picture has the following dimensions:
thickness: 7/16 inch
length: 2 1/8 inches
width: 1 in tall
Wheel diameter appears to be: 1 1/8 inches

My guess would be the Remington, 81-007?

2nd choice . . Concave, 81-090?

I didn't realize I had to remove the entire side of the door to get access to the other piece of the roller assembly.