The mirror on my friends Caddy just went floppy loose between the mirror head and the base. My '57 Shop Manual on CD doesn't even have the word 'mirror' in the index. Can these be fixed, or do I have to replace it? Where would I get one? I've looked at honestjohn.com, cadillacking.com, mcveys.com, fusick.com, allcads.com, caddydaddy.com, antiquecadillacparts.com, arizonavintageparts.com, amazon & ebay. Any suggestions?