If it's a Latitude there are 2 adjustment screws on each arm,
besure to
lift the arm as you adjust
Adjust the arm that is causing the problem, might solve the fabric problem
The fabric can be adjusted.
Extend the awning about half way
Tie the arms to each other at their mid point knuckle.
Extend the awning till the fabric is loose
There should be a small screw securing each corner, remove and move 1 corner
a little
Test and readjust as needed... good luck