Once the landing stones have had time to set, drop a plumb bob from the center of each post location on the awning to determine where each post should be on the landing. Use a combination square to draw two perpendicular lines through the mark, aligned with the front and sides of the landing.
Our replacement posts came with installation brackets that required us to lift the awning ¼ inch. To do so, we replaced our 2x6 supports with jack posts, which can be found at most local home centers. They allow you to carefully control the lifting.
Find Jack Posts