Replace the cam locks and reassemble the entire awning.
How to repair rv awning arm.
To replace the cam lock disassemble the awning assembly completely.
Next unroll the awning and slide the arms into place before adjusting the tension using the knobs on either side of the awning.
That came with your awning and making sure not to strip the screws.
If the rail needs to move to the right remove the right screw and pull the awning right.
Only move the awning a half inch at a time till you get it where it needs to be.