Quote:
Originally Posted by oldtrucker
Be careful when you put it back together, e.g. the rubber seal / coverup. I broke my wind-shield because I applied too much force and was not careful enough (just my thumb) to the rubber seal in the wrong place. Crack.....|----\___, kaching! 
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your thumb is cast from steel perhaps?
a coat of soap on the rubber tongue of the molding and a gentle press clips the molding back into place without any assistance of force.