Parts Missing

I have a patio screen door that appears to be missing both it's corner pieces and rollers, per the attached photos! There is what looks like an adjustment screw on the top of the frame pointing down and is visible in the photo labelled Door1.
Can you please identify what corner/roller combination I need to order to repair this door.Attached is a picture of the old roller. I'm not sure if it is the correct one for this door. It might have been used because the previous owner could only find this one at the local hardware store. It has to be bent out of shape to fit, and as mentioned both corner pieces are removed and missing. The missing corner pieces would be inserted into the slot and attached by a screw through the hole as shown in the Door3 picture, I'm guessing.
The Door2 picture shows the handle part. Not sure if that would help in identifying the corner pieces needed.
Many thanks

Rick

Thanks for helping. I should add that the roller's screw attachment point is ½ inch from the side and from underneath; and that the adjustment screw is a further 1 ½ inches from the side and coming from above. I'm thinking that if the actual parts can't be identified, maybe your Tension Spring Roller Part #84-154 along with your Adjustment Screw Part #84-504 might do the trick. What do you think?