What's your "Go To" for a hard head?

[rockfla]

Originally Posted by deuce_roadster

I have a special very THIN hole saw like tool that just fits over the stud that goes down and cuts the aluminum oxidation that is causing the problem. This tool is made to be used by hand I think. I have never had to use it but understand how it works. The metal is about the thickness of a razor blade. Later today I will post a picture of it in my MISC album.

I wondered also, since its the middle very back stud, the one the body ground strap is fastened too, IF the electrical current has "some" effect in conjunction with the "rust" factor and/or any elctrolisis associated with anti freeze.