Debating on what to do with this. Either: a). Leave it alone, don't worry about it, or b). run a bead of clear silicone between the bracket and frame, or c). run a bead of silicone between the bracket and frame and weld the ends shut.
I'm just worried about creating a greenhouse effect and rotting the frame out. On the other hand if I don't seal it then water will sit in there.