Be careful when you loosen those top bolts maybe have a buddy there in the middle of the awning tube to try to hold it while you make adjustments.
How to tighten awning fabric.
One was plenty for mine and i would do no more than two revolutions before trying it.
At each end of the awning in the connection awning track is a small screw called the slider set screw.
My awning fabric was perfect in line when rolled up so i figured it was the arms and not the fabric that needed adjusted.
Special aluminum poles often accompany the rv awning for this use.
Just snap the support arm back into it s bracket and slide the tension arm into it s slot and roll it up.
Your awning can be secured by using an awning stake and tie down straps.
Repeat this step with the other tensioning arm.
While standing in front of the awning pull the awning tube downward and toward yourself.
Check to see which is the case with yours.
With your free hand tighten the knob on the upper tensioning arm.
Place the step stool near the lip of the awning.
Position so the pole pushes the awning out adding tension to the fabric.
Push the aluminum pole in its extended length up to the rv wall and down to the lip of the awning under the awning itself.
Determine which direction the awning arm rail needs to move so that it is properly aligned.
You do not want to get it too tight and it takes only a few extra minutes to roll the awning up without replacing the screws.
Need help adjusting your awning.