Hatch - Few Questions - Photos

Im working on the Galley Hatch Again This evening and I have a few questions from the pro,s on the photo I took of the back side of the Voyager...
Ok here are 2 extra ribs without notches in them... Should I laminate or screw these to the tear wall sides to double up the wall and make the ply Hatch Top more solid to lay on? Or is it even necessary to install these 2 on the wall sides and start the Hatch off a 1/4 inch in from there?
Classic Finn
Ok here are 2 extra ribs without notches in them... Should I laminate or screw these to the tear wall sides to double up the wall and make the ply Hatch Top more solid to lay on? Or is it even necessary to install these 2 on the wall sides and start the Hatch off a 1/4 inch in from there?
Classic Finn
