The Micro Set instructions tell you to...
1. Brush Micro Set on the surface to which the decal will be applied
2. Wet and apply decal
3. Brush Micro Set onto the decal
4. Wait several minutes for the decal to soften, then blot with a moist paper towel
Test # 1 (on a large registration ID decal) followed the instructions. After step 3, the decal began to wrinkle. I gave it about five minutes and then blotted it with a moist paper towel - most of the wrinkles remained.
Test # 2 (on a large club affiliation decal) eliminated step 3. There was some wrinkling but not as much.
Test #3 (on a smaller initials decal) used all of the steps, but I changed step 4 from several minutes to overnight. There was minimal wrinkling.
Some of the wrinkling may have been due to the three coats of decal bonder I sprayed on the decals before applying them. I've heard that one coat should be sufficient - I'll try that in another test.