I need to remove the windows for a couple reasons. Namely trim clips and headliner both need to be replaced. The gasket is 44 years old. It's the kind with the round rubber expander (whatever it's called) that spreads the gasket apart to form the seal. I have visions of this round rubber breaking into one inch chunks as I remove it. Can this gasket be reused at its age? Has anyone done this? Is it possible? Should I just commit myself to getting a new gasket??