Greetings all: I have purchased a new Model Power kit, #186, 2 industrial silos. The instructions say that there should be 6 sprues, but there are only five. Instructions show how to build the silos with only a ladder system to get to the tops of them, however, the kit comes with an elevator leg, but is missing pieces to mount the head. It looks kind of like the leg off this cement plant from IHC. (Same height, but lacking the platform below the head.) Any ideas out there to add the leg?