Sliding door fly screen cord adjustment.

[Phil Dub]

Does anyone know how to locate or access the lower cord adjuster on the sliding door fly screen.
Also does anyone know who makes them?

 

[Phil Dub]

I’ve found the cord tension adjuster(there is only one) and it’s located on the top guide. It’s a white plastic guide with a tension spring attached. The Allen screw is 1.5mm which is very small. I only had to move the adjuster by about 5-7mm and it has made the fly screen much easier to slide without the cord getting slack on the lower guide.