The cover is held along it's upper edge by SS screws which I have from W&N. The lower portion of the panel also has holes for attachment (see borrowed picture) and mine was held with rivets which I drilled out. Ready to re-attach and not sure what goes through the lower holes, read a ton of posts and could not get any idea. As mentioned in other posts, the RealOEM diagram is confusing and the parts list actually shows 2 rivets.
BTW: Many wrote of difficulty with the white plastic clips and the cover molding not clicking in place. One solution was a nylon washer around the neck of the clip to hold it out just a smidge from the cover. I learned an old trick, use a tiny rubber O-ring instead of the washer. It pulls the clip out enough so the molding can clip snugly in place while obturating the hole and making it water tight.
BTW: Many wrote of difficulty with the white plastic clips and the cover molding not clicking in place. One solution was a nylon washer around the neck of the clip to hold it out just a smidge from the cover. I learned an old trick, use a tiny rubber O-ring instead of the washer. It pulls the clip out enough so the molding can clip snugly in place while obturating the hole and making it water tight.