I have an 01 Jeep Grand Cherokee and my boyfriend is trying to work on replacing my front rotors and pads. The problem is we have this rusty bolt and it won't come loose. Does anyone have any other methods they use besides, PB Blaster or the like, or Air Tools that can help remove this bolt. It's the bolt that connects the calliper (sp?) to the back of the rotor. Any and all help is appreciated. Thanks.