Squad cars, two separate decals, printed at the same time. Printed on 3M 680C and overlam with 8518 after waiting about 12 hours. One decal on a window is fine.. the other on the car body is starting to show the 'delamination' or 'moldy' look on the edges. And all the cars have it, just not this one, and they were all done at different times. I can't figure it.. the windows are fine, the car bodies are having issues. Anyone with even a guess?