In heat the waterslide will last longer. Best if you can spray them with clear urethane after you apply them. The peel & stick will start to release on the edges and once that happens the curling accelerates. But the waterslide stuff isn't the same heavy gelatin we used. It is all high tech now. You can make your own you know. I explained how I do this a couple of years ago when I was re-imagining the 52 speedometer. You can see the whole pageant here:

https://www.stovebolt.com/ubbthreads/ubbthreads.php/topics/1343677/1.html


~ Jon
1952 1/2 ton with 1959 235 | T5 with 3.07 rear end