I was following ctjmini's guide on installing the HF 6.5 clone on my DB. I got to where it told me how to put the clutch on. I took the keyway off and slid the clutch on but the keyway wouldn't go back in when I lined up the notches on the clutch and shaft. Instead of using my head and filing it down or lubing it I just tried to hit the keyway in with a hammer. The keyway is now stuck halfway in and I can't get it back off. Can anyone tell me how to either put the keyway the rest of the way in or take it back out? I really need help and I'm afraid I screwed up either the clutch or the engine.