I hate to ask it, but I sheered the head off a bolt and now I need to pull it out. I have a crappy bolt extractor set from autozone, but it has no directions. I have some tapered bits and some non tapered bits. any ideas on what I have to do to pull this bolt out? It has plenty of anti-seize on it, so it should come out easily enough, but its in the hole a good 1/4 or so, so its pretty deep.