I bought a Trainer 40 and it has a 61” wingspan the wings come in to pieces pre-Covered. The plans show the wings to be fastened together with some wood strips. The strips are to be glued inside the wings in slots on both sides this leaves no type of fastning on top or bottom of the wing just fastened together by the two strips of wood (about ¼” thick).

Would anyone recommend something to fasten the wings a little better its kinda tricky as the wings are already covered? Or are the two strips of wood plenty to fasten the two halves of the wings together?