So I've tried vinegar, Iso-Alcohol, citrus, and now Meg's Body Solvent. The stuff is great for really stripping the paint down of everything like fillers and such, but the tar I bought it to get rid of wont budge. Its almost impossible to get pics of the spots, they are like black or brown marks that are ALMOST flush to the paint, but they are there. Theres also a couple spots the size of a drop of water that are just thick black gunk that doesnt go anywhere no matter how long i let the solvent soak. How can I get ride of these buggers?