try using something like Rosonol lighter fluid or isopropyl alcohol. Not rubbing alcohol, its not strong enough, you can get potent isopropanol from dry-gas, but be careful to read the label to be sure it contains isopropyl alcohol and not methanol or methyl alcohol.
either way before using a solvent on the paint, make sure you test it first in an inconspicous area since some solvents will dull, haze or remove the clear coat, some can even strip the paint
