Stop in for a cup of coffee

HF are guaranteed also. Try heat yet an kroil?
yeah, the HF, just instantly twist

Would really suck breaking the head off. Sounds like the threads are locked in tight no bit will help that till they are loosened somehow.
Yep, it would. I've tried some heat to no avail. Factory puts a high temp epoxy on the threads that is resistant to oils...
What are you trying to get loose?

Tremec 6 Speed Interlock Bushing / Shift Lever Guide Bolt, #D7