Can it be reached without taking the end cap off the awning? I tried removing the cap - released the lower tab but couldn't get it to budge and don't see the other tab.
Are you sure...it is a real pain to see...in fact you can’t see it good enough to determine the screw type.
Here is your picture with my arrow to the area of the screw.
I got the ladder out and took as close a picture as my cell phone can do. It's not there.
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Normal people believe that if it ain't broke, don't fix it.
Engineers believe in fixing it so that it never breaks.
I got the ladder out and took as close a picture as my cell phone can do. It's not there.
While I can't look at mine (August 2017 delivery) since it is under a cover, I don't believe I have the described adjustment screws. To get the awning to close completely I had to adjust (slide) the end of the arms multiple times. Eventually, I found the sweet spots...
Given that it isn't mentioned in the 2017 manual, I'm assuming it's something added later.
FWIW I found that the current download of the "Operating Instructions" does not include all of the adjustments that are covered in the "Installation Instructions" (e.g. "Awning Open/Close Limits" not in the former but in the latter).