I'm in the middle of doing an H55 swap on my 1983 60 and today while removing the clutch I saw that one of my flywheel bolts has the head snapped off. There is basically no material left from the bolt sticking out of the hole in the crank. Any suggestions of how to get it out? I've read most people say stay away from extractors..... I had to use a prybar to get the remaining 5 out, and given the amount of force it took I doubt if be successful with an extractor. Right now I'm leaning toward slowly drilling out the bolt until I get the the threads and then using a pick to get the rest, but I'm open to suggestions.