I admit my wife thinks I have too many screws loose but I am having trouble with one in particular. I am trying to remove a headlight bucket from my 39 Plymouth coupe to pound out some dents and one screw will not break. I have sprayed over and over but it will not budge. I cannot get vice grips on it and not really ble to get behind it to do anything but blast it. I hesitate to use heat because I want to keep the finish that is on the fenders. Looking for some tips and thanks in advance.