I have fitted a dash top mirror to my 96 4/4, I am now left with a button glued to the windscreen that held the old mirror. I have tried heating with hairdryer, acetone and nitro Mors all of which haven't worked. I am reluctant to get the blow lamp out. Has anyone removed one of these, I have tried a local windscreen replacement company who only replaced mirrors as part of replacing the windscreen. Many thanks. Paul.