I just bought a 2007 M6 with about 1300 miles. I was planning on taking off the clutch to check which weights I had, so I pulled out the clutch bolt and screwed in the puller. I screwed it in pretty tight and banged on it a couple times and got nothing so screwed a little deeper and still got nothing. I unscrewed the puller and has a little metel on the tip of the threads and still can't get the clutch off. Did i mess or strip something? Any ideas on how to get it off?