Adhesive for sound deadening?

[trapin]

Hey guys....getting ready to do the sound-deadener in my car this weekend. The rolls I have, have been sitting around for a number of years and they have lost their tackiness. I figure there still has to be a way to apply the sheets with maybe a spray adhesive or brush-on adhesive? I don't want it to be permanent just enough to have a secure hold and be able to peel off should I ever need to. What products do you guys recommend? Thanks.

[Z06killinSBF]

If its peel n stick stuff just leave it in the sun or heat for a little, should rebound. If not, 3M-90 works good for being semi permanent

[trapin]

If its peel n stick stuff just leave it in the sun or heat for a little, should rebound. If not, 3M-90 works good for being semi permanent
Thanks Man!