Oh god are those spark plugs a nightmare. I've got the removal tool in my toolbox and I never want to do that job again. A solid 12 hours under the hood, most miserable job I've ever done and took a pep talk from the head mechanic at local Ford dealer for me to get the job done as he assured me I was doing everything how they did it and that yes it was a miserable job, to the point they even on occasion (though very rare) have had to pull the motor and remove the plug from the inside. Of course the first plug came out easy for me giving me hope, the rest all broke which meant using the extraction tool to try and grab and pull the liner out only to have it let loose and try again, and again, and again until it finally comes. ::crying::
NEVER AGAIN!!!