I am not familiar with your model or the mirrors but the last time I was doing a job in the house that involved sticking a mirror on to a vertical surface a glass shop suggested the following: get a tube of construction adhesive (clear silicone or Selleys/Liquid Nails mirror adhesive) and a roll of double sided adhesive foam tape from a hardware store. Put a few strips of tape on the back of the mirror and use a caulk gun to apply some beads of adhesive in the remaining space. The double sided tape will hold the mirror in place while the adhesive sets. Has always worked for me.
http://www.selleys.com/adhesives/constr ... quid-nailshttp://www.selleys.com/home-improvement ... s-to-walls