that makes sense. There is also an 18 inch wooden dowl, with a small rectangle of rubber (in the same bag) I'm sure this is for the main wings, but there is no indication where the wings join together as to where you put the dowl. Looks like a one piece wing to me, once you epoxy them together. Also don't see any indication as to where to route the aileron servo wires to the center of the wing. I found the hinge slots for the aileron, elevator and rudder. My big issue at the moment is where to drill or cut for the 18 inch dowl. I really hope the guy that sold me the plane sends the manual like he said he would. Can't wait to get her flying!! Skyhawk says they have a manual! that would be great!!!