Finally got Drill Sergeant running! It always amazes me how much time it takes to do all the detail work involved in putting an engine compartment together. Paint this - paint that, make sure all the bolts are uniformed. One thing I like to... do on hose clamps is I will put the clamp on and tighten it down, mark the excesses, take the clamp back off and cut off the excess, then reinstall.
Its the little things like that, that take all the time.