Sorry for not going into better details. You should wet sand the tank with 1000 grit wet paper wipe it down with prep solvent or wax and grease remover.put on your decal than spray 3coats of clear on the tank.
Hello just wanted to introduce myself djs48. I am in the middle of a frame off restoration on a 79 cb750k.bike had been sitting for 10yrs when I got her.