Can anyone recommend a good strong glue that isn't a liquid? I need to
put it on a vertical surface but obviously don't want to have it all
dribble down. I have no faith in Superglue - the only thing I've ever
seen it stick is skin!

It's actually to mount my LPG control switch in position in the car.
They're self-adhesive but for some reason this just won't stay stuck
on. You can see what it's for he

http://i137.photobucket.com/albums/q...doo/switch.jpg