******************************************************I'll bet you're having fun outfitting your shop. Chopper's right about the Snap-on impact driver, it always works. I had a cheap one and it was a total waste of money.
GOT IT!!!! I went and bought a left drill bit and a decent ez out and a tap to chase the threads. Took a little doing, had to run a pilot hole cuz my lefty wasn't biting. But after the pilot hole, it dug most of the screw out. Got the rest with the ez out. The chased the threads, and bingo! Filled my primary, put in new gasket, installed new derby cover using anti-seize. Looks great! Way better than buying a new outer primary case. HUGE THANKS GUYS!!!