Iím stripping the seat frame on my VBA to remove the rust and repaint it. The pin on the hinged part was brazed on. Iíve had to grind the brass off and remove the pin to get to a section that needs repair. Was the pin originally brazed, or was this a bad repair by a previous owner? Does anyone know if I can buy a replacement pin and plastic bush? Part numbers 84474 and 84475.