EXACTLY how hard is it to replace a timing tab? I was just informed i need a new one, it has to be done tonight, and i cannot get into the CAINTMAKIT! Racing garage until 6pm and the Black Bear cannot be there in the morning. Time issues? What all has to come off? I have Power Steering so i KNOW that will get in the way... help/comments/suggestions/advice/flames all apprecaited!