no, but I've tightened one - like I said, it's a press fit, peened in place, and part of the piece the glass goes in - the small plate that the pin goes thru is riveted to the outer frame -
this piece, it's one of the tabs that secures the vent assembly into the door
oh - also, for the riveting, in order to get that frame back in, the outer frame must be removed from the division bar - that takes rivets, similar to the ones that hold the rubber seal on
Bill