Grill damaged by hurricane (fell over)- followed Weber’s recommended replacement parts and steps – still not working well

Grill worked great on the day before Helene. Then got knocked over. Weber recommended that I replace Control Panel and LP Manifold Assembly which I did (pricey). Plus other steps like resetting the regulator, clean burners, etc.

Problem is that the grill just doesn't get hot enough.

Idea? Thanks