[chevytrucknut]

First- clean up and file any rough sheetmetal on the pinch weld. this makes it easier to pull your cord and won't mess up your rubber.
Second- put the rubber out in the sun for a while and let it get soft and hot. then place it on the glass and let them sit a while.
Third-get a friend to come and help you with the install.
top corners are the toughest for me. helps to have a friend just gently push inward from outside as you work away from them on the inside.