Laquer thinner won't hurt the paint, my dads been using it for things like that since he started detailing and I did it with my 300E and it's fine. Lacquer thinner is safe and it gets it off.

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76 MG Midget
78 Datsun 280Z
86 Peugeot 505
01 Subaru Outback

“Owning a car is like owning a dog. Every now and then, it craps on the carpet — but it’s still your dog.” - Jeremy Clarkson