Since I didn't see much carbon holding the plug in place and the other 2 stuck ones came out with a lot of squeaking and the machinist report, it makes me believe my issue was the stuck threads. Further to that, the machinist said to coat the entire GP with the exception of the tip with anti-sieze because if the carbon does come past the bevel, it could clog up the threads and the space between the GP and the head past the threads. Can't hurt, can it?

Also, if I had taken out the head, firtst thing, it would have cost me $50 to remove the GP. Instead, I have to pay about $300 to make it work again. If I have this same problem, I will take it to a machine shop. no more drilling for me. It was a good idea but it hinged on one critical fact. You have to get the angle just right or it will not work.

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01 Ford Excursion Powerstroke
99 E300 Turbodiesel
91 Vette with 383 motor
05 Polaris Sportsman 800 EFI
06 Polaris Sportsman 500 EFI
03 SeaDoo GTX SC Red
03 SeaDoo GTX SC Yellow
04 Tailgator 21 ft Toy Hauler
11 Harley Davidson 883 SuperLow