Remove the awning fabric from the awning arms and then remove the tops of the arms to access the torsion assembly.
How to repair rv awning arm.
Replace the cam locks and reassemble the entire awning.
Only move the awning a half inch at a time till you get it where it needs to be.
Next unroll the awning and slide the arms into place before adjusting the tension using the knobs on either side of the awning.
To replace the cam lock disassemble the awning assembly completely.
If the upper arm rail needs to move to the left you want to remove the left screw and pull the awning in the track to the left.