Caravan Awning Sagging
The problem seems to be because the awning is 3 5metres deep there is a full extra set of poles at 2 5metres and because the extra front metre is tight its stops the main 2 5 metre roof from tightening.
Caravan awning sagging. Reattach the rear awning leg and lower both leg sections completely. Feed a hex screw though the side edges of the awning. Tension is the main cause of water pooling in your awning. Poor tension typically results in a saggy center which acts as a water collection pool.
Awnings rely on a solid supportive frame to keep the fabric stretched flat and tight. Roll the awning back up to observe how tight it is. You can leave the support arms hanging freely but it might help to simply slide the stops back into the leg channel. During regular use of your rv the awning fabric and slide in the awning tube causing alignment is.
Here is brad taylor showing how to adjust an awning fabric. Screw the other side of the awning in place using a second hex screw. Turn the screw into the mounting bracket with a ratchet so that the awning sits tightly in place.