Here are some photos of what I did to fix the cowl that was no longer attached at the ends of the plastic cowl.
I made "washers" from carbon fiber sheet material. The washer is the same shape as the bottom of the well that attaches the plastic with a stud and a nut/washer. If you have any material horizontal material that is still attached to the wall this washer should hold it down.
I you have nothing at the bottom, you can JB Weld the "washer" in place as I did on one side.
I am thinking of maybe making up a few sets of washers. PM me if interested.
Here is the washer in place. The nut with steel washer attached [OEM part] is then intalled and tightened with a 10mm socket.
This is the finished look of the cowl trim after repair.
Sorry for the multiple posts.....I had to relearn posting photos.