took the grady white decal of today to replace with a new ones. it's a 1990 sailfish used a heat gun. well it left the glue on that i couldn't remove. the only thing that came off was the blue lettering. tried goo b gone, interlux 216 and then tried a little gas nothing. the only thing i didn't try was on/off i know this removes everything. any ideas what to use that will work and not harm the boat.