Are you saying that your engines start when your condition's are at ground stop?  If that is so then it sounds like it isn't the tutorial that is wrong, it might be the plane.  That tutorial is the best I have found for the C-130 and it works for me everytime.  If it's possible, please provide the steps you are taking in sequence when you try and start the aircraft.  Make sure you start with the C172 and shut-down engine, avionics, and battery.

-Josh B.