'Merlin Spray Glue'
Around ?6 for the small can, which is easy to use.
I spray lightly both surfaces when ready to fit,
& let it go off a little before putting surfaces together. (be carefull doing it this way, must be right first time)
I used to get it at Car Shows from the Carpet/Trim seller stands,
now widely available.
Better IMO than Evo-Stick or Ever Build spray glue.
george