The hub on the front of the crankshaft on my 733i cracked. I need a replacement. I pulled it off - the end of my crank is not beautiful but I am going to put it back together and hope for the best(this is not the Space Shuttle I'm working on)! Also, does anyone have the Special Tool 11 2 100 used for holding the flywheel? What's that worth and where do you get these Special Tools?