My Stipe head puller has been used on a dozen or so heads. Hasn't failed to get one off yet.
Just thinking out loud, how about using clay to build a dam around the studs and fill it with your favorite penetrating oil. hook up your lift to put upward pressure on head and heat the head area with a space heater for a while?![]()
There was a guy on facebook that had the same problem with his head. Tried different methods and with a head puller broke the spark plug section of the head. To remove it he had to use a cold chisel and a hammer.