I remember my dash bezel trim in my 69 2+2. When the car got really hot inside would buckle and distort like crazy. Only because it was fixed solid and wouldn't float. And my uncle that owned it before had gotten contact cement all over it trying to get it to stay down. My 67 Grande's fake woodgrain across the radio and heater control pops out a little when hot as well.

So good point Randy. It needs to be attached in a way that it can at least move a little bit. That aluminum is pretty unforgiving. Some thought out spacing of Permatex Ultra Black in dabs?

It should almost be on pins that sit in small grommets.

3M  Mounting tape its about $7 , two sided appears with red peel off.  I believe it is 25 pound rated. I keep a roll in my tool box and I`m always replacing it so it gets used a lot. Works on emblems, modings  etc..

Go to your nearest glass company and get the double sided tape they use. Its thin but probably the highest sticking power Ive found. Excellent for trim pieces.

When I say glass company, I mean residential glass. Not Automotive. 

Just wanted to report that the Permatex Adhesive Sealant work fantastic! I used a 1/2" wide bristle brush and smoothed the adhesive in the area where the trim mounts on the instrument cluster. About 1/16 thick. Placing the trim in that exact area was now easier, as the adhesive was forgiving and allowed the trim to be slide a bit to line it up. I cut some wood pieces, to give even pressure, and clamped them over the trim for about 4 hours. I then removed the clamps and was able to easily remove any adhesive that had squeezed out. The set-up time is 1 hour but full cure time is 24 hours. Time will tell on longevity, but I am not worried that it is going to fail, as the grip is stronger than needed.