All I can say from my experience over the last 18-20 years as an auto/diesel/equipment mechanic is keep on trying. Sometimes it's good to walk away for a few minutes, or days and when you come back the sucker will probably fall into place. Perhaps you were'nt holding your mouth right? In situations like that anything is possible! Try putting an alternator on a Cadillac Deville or Seville(1998-20xx models) Yikes! Although with experience it becomes easy. Good luck with it!