I've got a kit that has 1/4" punk balsa for the stab. I could go on a rant here about 1/4" stabs in 500-600 sq. in. kits but this is what it came with. Obviously will be to flexible by itself so I want to make it thicker and stiffer. I decided to laminate pieces of 1/32" medium hard sheet on top and bottom. would it be stiffer if I cut out the stab and glue in warren truss ribs or just leave it solid? Also going to put .75oz bias cut fiberglass on it with Zpoxy. Thanks,Motorman