It really bothered me how flimbsy the upper baggage area is around where it meets the control tunnel. In looking at it from below through the hell hole, I noticed that it would not take much deformation in that area to cause interference with the elevator/flapperon control. I know this would always bother me in case a load shifted and caused a problem, so I decided to do something to prevent it. I had some 1/8" angle stock around, so I cut a 80cm length. I drilled between the existing rivets and attached it to the edge. Although the primary purpose is to prevent deformation at the tunnel intersection, I also tucked the edge of the carpet underneath to clean up the carpet edge. In addition, the angle provides a raised lip to help keep anything on the upper baggage area in place.
The whole baggage area now feels much more solid and I shouldn't have to worry about accidental deformation interfering with the controls.