I'm glad you say they're difficult, because they were. Admittedly, it's only my second car kit, so it was quite ambitious even before I bunged in some photoetch stuff and engine detail
.
The way the decal was printed seemed to bear no connection to the shape of the car. I used a few discrete cuts and a fair bit of Micro Set, but the decals are pretty thick and have little adhesion on complex curves, so think that Micro Sol might have been better if I had any.
For some reason the driver's side stripe ended up a little short. No idea why!
The hair drier tip is one I'll definitely try next time - quite fancy adding a Stratos or Integrale to the collection.