The aluminum heads on the Duratec engine are incredibly pliable when hot. bad move.
If this "kit" is a tap/die set, then you would use the tab to "re-thread" your existing hole that has been stripped out. Make sure its straight, and then work your way through there (this is all corrolated from tapping OTHER holes, etc.. never done this to a head..
Give it a bit, night time is a little slow on CEG.. someone will surely answer by mid-day, tomorrow.. (you can't do this in the dark, either way! lol)
Ray
