When I got this project only one wing had been started. The previous owner had glued the cores to the right wing and got it ready to skin, but for some reason stopped there. I took measurements for what he had done and they were pretty much right on with the what the book said. I decided to go ahead and get the left wing up to the same stage as the right and skin them at the same time. The cores have some hangar rash on them but nothing major. I followed the book and got the front cores glued on today.