I recently greased the wiffletree, which by the way, looked like it had never been greased since manufacture. The lift system goes up much easier now. BUT, now the roof doesn't stay up unless the stop pin is engaged. It seems like a rather unsafe way to keep the roof up, this one little pin. If someone were to remove the crank while we were inside the camper, the roof would come down on us rather quickly. Does anyone know if this is just how it is? Or is there something missing that should keep the roof up besides this pin?