OK, interesting write-up, and thanks for it, But I have a different issue. The mirror (glass) on my driver-side mirror has become unstuck from the bracket that attaches it to the motor. I tried using two different double-side sticking tapes and it doesn't hold for long (a couple of days every time), I assume because of the curved surface of the glass. Is there another way to attach the bracket to the glass? I do not want to use hot silicone, as it can damage the heating element on the back of the glass.

Any help will be appreciated.