[Jaxonalden]

The way your drilling out your broken bolts is good but not the right way. Go to your local auto parts store and buy an Easy Out. It looks like a drill bit that has a reverse thread, resembles a twisted ice cream cone. After you drill a certain size hole (each easy out will say) in the broken stud the Easy Out is screwed into the hole (Lt hand thread) and as its biting in it's also extracting. Works very well and will save your threads.

Good luck.