Rather than tap, try using channel locks with the jaws wide apart. You'll have to use a thin sheet of rubber or something to keep from gouging the handle side opposite the pin hole. Squeeze the pin down into the hole, without putting any pressure on the glass. I can't recall, but If it's a roll pin you may first need to compress the sides with needlenose to get it started into the hole. If it's a solid pin with one end serrated, you want the smooth end going in first. A small c clamp may also work to slowly press the pin into the hole. If you do decide to tap the pin, you need to swing the glass wide open and back up the handle with something heavy like a body dolly to absorb the shock while striking the pin. Bottom line you can't put pressure on the glass and have to be careful you don't damage the handle or paint.