Glad I trimmed the bottom otherwise the mirror could have fallen off and possibly injured one of our grand daughters who are camping with us if it had.
We have had very hot temperatures this last week and all the adhesive except a few inches at the top released. I noticed a bottom corner of the mirror was at the edge of the bottom trim. Very light pressure and the mirror released from the board.
I now have another project to do the vanity mirror as it should have been done by Jayco in the first place.