Nylon Bottom Guide, Crossly

I just purchased 2 of the 86-002 bottom guides. Are these firmly attached or are they intended to slide up and down to engage or disengage the sliding screen.

lower guide 1/2 wide, don't know how long it was to start with

This door uses a plastic piece and a screw to expand and contract the height of the screen door there are four of them. These plastic inserts are threaded about 2" tall and 1" wide and 1/4" thick. There is a notch at the top.

These are old cottage doors. No brand name found. Missing 6 of these sliding screen door bottom guides. The aluminum extrusion measures 1/2" on the outside, about 3/8" inside extrusion dimension. About ½" deep (tall) and 2.5" min. length. Of course, the light screen door rides on a narrow sing ... (cont.)

I recently purchased the 84-063 and 86-002 from your company in an attempt to fix a sliding screen door. Unfortunately they were no the right parts. Attached are photos of the 1 part I need. It is a plastic guide that keeps the door in its track. I would need 10 of these pieces. How would I ... (cont.)