I don't know about every one else, but I double check head bolt and crank bolt torque specs before I reassemble any thing. Even if I've done it 10 times before. As for firing order, well I'm leaving that alone. If you don't know a 4 cyl firing order by now... And BTW a good friend of mine who has been a liscensed mechanic for 20+ years, still keeps his books on a shelf right next to his toolbox.