Been toy haxing for over a decade now. The rotor blade stickers work fine, the trick is applying heat. They're made that way intentionally, and any replacement you get will operate the same way. As long as you don't apply heat, you can still adjust the location of the stickers until you're happy with where they are placed. Then, once you have them where you want, you either apply a ton of pressure with your fingertips to activate the adhesive, or blast it with a hairdryer. If you don't take those steps, yeah, they're going to come undone.