On heads like this I have never had good results with welding a nut or soaking with oil, so ....... I always do this, works every time. Go buy a fresh set of drill bits, grind stud flush with head, center punch it, start with 1/8" bit, and keep drilling until one size smaller than stud is, by this time very little of stud is still in there, so I usually just run a tap and chase the threads, done.
Well John, looks like I should have read this before I attempted the "Easy Out" attempt.
But for my next trick, let's drill a 5/32 hole dead center, then attempt to use that brand new set of easy outs. So what's the trick you ask ? Getting the busted easy out. OUT.
I'm going to work or something else for a while, lets see what I can screw up next !! Lol I'm laughing, cause men don't cry. At least not in tractor forums. : )