Leaderboard

The purpose your guess is as valid as mine. They function to align the pin from the top into the frame of the windshield. If you ever watch that pin slide into the pin cup when the top is coming down you can see how it will catch the edge of the pin cup and then align the pin so it is in the center of the hole. I imagine it was designed that way because that would give the top the best seal. That is my understand anyways. Being a plastic part between two solid metal pieces they do not last forever.