I am trying to remove my 09 M8 primary clutch to have slp balance it and it will not come off. I have the clutch puller and have tried a 1/2" impact gun and a 3/4" impact gun and neither will remove the dang thing. Looking for suggestion. I am using the same puller that I used on my M7 many times, I take it they are the same because it threads in just fine.