Can aluminum living hinge still be found for use on the side walls that tip up as the roof is raised?Mine has the "m" shaped bar that goes over an extruded aluminum bar on the body and an extruded plastic bar attached to the plastic side wall which is breaking loose. Where can an aluminum replacement now be found? or even a plastic replacement? Mine I am not able to use the living hinge with 2 cord of .125 inch that slide in without major modification. This is not a true living hinge. It is an aluminum/plastic continuous hinge that was used on this year model.