After riveting the skeleton together it was time to fit the counter balance weight and rivet the skins on. I placed a small dob of blue silastic sealant on the very ends of the stiffeners as in the manual, as to reduce any vibration that may occur. Also on the counter weight holding screws these had loctite thread applied. This building of the elevator didn't take long as I had thought, although as everything with this project it the prep work that takes the longest.