I generally use the 3m spray adhesive too, but in this case I haven't figured out how to do it without making a mess, not to mention if the two surfaces make contact before I want them to, I am in trouble. I was considering using the 3m glue that comes in a tube. Even that will be tricky. I did contact AH Spares and asked them how it is normally done. If I get any good advice, I will post it.
Kevin