RE: Sig 1/4 scale Cub build?
smkrcflyer , I know exactly what you are refering to . The wing joining can easily be modified by building in a joining tab that will keep the trailing edges from sliding apart .
This can be as simple as adding a small false spar that protrudes from the center section root rib that will fit into a pocket that you would build into the mating root rib on the right wing panel , The false spar can be secured permanantly to the center section and when the wings are slid together a screw would hold the false spar into the mating socket on the right wing panel . It is not as complicated as it may sound even if youve already covered the wing . The modification can be done on the underside of the wing were patching the covering wont be noticed .