I have a customer who has an all original Plymouth Superbird. It has 14,000 miles on it and still has all the grease marks from the factory. He parked it in his building and the plywood above the car had sap come out of it and landed on the car. He wants me to detail his car for him but with the value this car has and the fact the sap is on the Superbird decal I am trying to find the safest way to remove the sap without damaging the decal. Any help would be greatly appreciated. Thanks