2004 Stone. Gas cap stuck today. No luck with key, injected a lot of TriLube and still no joy. Removed the tank mounting screws and for some reason that worked and then the cap unlocked with a great out-rush of air. The tank must have pressurized from temperature change. I do remember that these gas caps have other temperamental problems and I don't remember what they are. Would someone please enlighten me to any of the various fixes?