What I did was take the shank off a small drill bit to use as a hinge pin. I bonded it to the black plastic housing that contains the actual switches. with acrylic that is a power liquid mix. I painted the housing first , laid the pin in place and covered with more acrylic. I also used 1/4 inch lengths from a nylon paintbrush to replace the degraded push button extensions. The up/down rocker temp control cover snapped on nicely to the nav bezel Hope my solution helos others with such an annoying failure