OK you may not like my method but it worked like a charm, brace yourself! I used a sharp chisel to get under the sticker, if you're skilled the blade of the chisel will glide over the paint and remove any stubborn sticker or decal and for adhesive residue I used, brace yourself again, I used good old diesel fuel on a cloth. I know, I know sounds crazy but it worked for me, and you guys have seen my bike not a blemish in sight from the procedure. A sharp chisel, some diesel fuel, a little skill and some patients does the trick. Remember to clean the area after using the diesel fuel.
Sorry goo gone but diesel or even gasoline removes adhesive residue that's why the decals on the tank are under clear coat. Think about it