I have the rocker molding on and went to put my Mach 1 letters on. How are they attached? I thought they just pressed on but the pins are loose in the holes and they hit the sheelmetal on the backside (too long). You cannot put them on before an peen over because they cover the attaching screw holes. Do I need to attach with emblem adhesive or are they just your tipical crappy repro parts?