I have a 380sl and would like to remove my sunvisors. I need to remove the top windshield frame cover to get to the 2 phillps screws. There is a small hole in the cover that appears to have a screw inside it that holds the cover onto the metal frame. I've used phillps, flat heads, allen wrenches, etc and can't seem to remove the screw to get the cover off. Can someone tell me what I have to do/use to remove the cover over the top of the inside window.