Need advice how to add - I don´t know it´s name: Trunk Handle Key Hole Cover?   1.) Aluminium  or stainless steel ? 2.) how can I extract the closure out of the handle? 3.) what is the small hole for? 4.) how did they manage to keep the cover centered, having his hub hole excentric?? 5.) I would prefer to rivet the cover 6.) if I can´t extract the closure, is there somthing like one of these expansion anchors, but watchmaker´s size?   Thanks for