Quote Originally Posted by Tom F. View Post
If they're really bad, you might not be able to reuse them. I got mine flat enough with an old wrist pin (Mercedes, so it was nice and fat) and a granite surface plate.
Make sure that all the adhesive is removed from the back side before you start smoothing it out. I did this on the odd tire pressure decal when I was afraid I wasn't going to find a correct replacement. I think it came out flat enough to reuse.