Nice work sensei! Did you use a router on the foam?
All of the Lanier planes retained the wing panels with a bolt into the aluminum wing tube. This let the panels rattle against the fuselage side. I prefer to eliminate the bolt into the tube and in its place, retain the wings with two bolts on each side through the fuselage sides into blind nuts installed in the wing roots. Much more secure and makes for a quieter airframe.