bobs... I need your help... This is not a trick question... I'm trying to figure out how to remove the rear rotors... The manual gives a basic, very simple step-by-step... But I'm looking at this thing and it has a 12 point star nut that has a divot that punches into the shaft that looks like it's seated forever... The damned rotor won't come off like the manual describes... Do you have any ideas ???... Because I'm clueless and tried everything aside from taking it to a dealer ?